diff --git a/app/controllers/beamers_controller.rb b/app/controllers/beamers_controller.rb
new file mode 100644
index 0000000..9e36187
--- /dev/null
+++ b/app/controllers/beamers_controller.rb
@@ -0,0 +1,69 @@
+# frozen_string_literal: true
+
+class BeamersController < ApplicationController
+  before_action :set_tournament
+  before_action :set_beamer, only: %i[show update destroy]
+  before_action :authenticate_user!, only: %i[create update destroy]
+  before_action -> { require_owner! @tournament.owner }, only: %i[create update destroy]
+  rescue_from ActiveRecord::RecordNotFound, with: :render_not_found_error
+
+  # GET /tournaments/:tournament_id/beamers
+  def index
+    render json: @tournament.beamers, each_serializer: BeamerSerializer
+  end
+
+  # GET /tournaments/:tournament_id/beamers/:id
+  def show
+    render json: @beamer
+  end
+
+  # GET /tournaments/:tournament_id/beamers/by_name?name=beamername
+  def by_name
+    beamer = @tournament.beamers.find_by(name: params[:name])
+    beamer ||= @tournament.beamers.default_beamer.first
+    if beamer
+      render json: beamer
+    else
+      render json: { error: 'No beamer found' }, status: :not_found
+    end
+  end
+
+  # POST /tournaments/:tournament_id/beamers
+  def create
+    beamer = @tournament.beamers.new(beamer_params)
+    if beamer.save
+      render json: beamer, status: :created
+    else
+      render json: beamer.errors, status: :unprocessable_entity
+    end
+  end
+
+  # PATCH /tournaments/:tournament_id/beamers/:id
+  def update
+    if @beamer.update(beamer_params)
+      render json: @beamer
+    else
+      render json: @beamer.errors, status: :unprocessable_entity
+    end
+  end
+
+  # DELETE /tournaments/:tournament_id/beamers/:id
+  def destroy
+    @beamer.destroy
+    head :no_content
+  end
+
+  private
+
+  def set_tournament
+    @tournament = Tournament.find(params[:tournament_id])
+  end
+
+  def set_beamer
+    @beamer = @tournament.beamers.find(params[:id])
+  end
+
+  def beamer_params
+    params.permit(:name, :display_state, :is_default, :qr_code_url, :logo_url)
+  end
+end
diff --git a/app/models/beamer.rb b/app/models/beamer.rb
new file mode 100644
index 0000000..e168f1c
--- /dev/null
+++ b/app/models/beamer.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+class Beamer < ApplicationRecord
+  DISPLAY_STATES = %w[
+    matches_all matches_in_progress matches_upcoming matches_not_started
+    matches_finished groups between_games during_game
+  ].freeze
+
+  belongs_to :tournament
+
+  validates :name, presence: true, uniqueness: { scope: :tournament_id }
+  validates :display_state, presence: true, inclusion: { in: DISPLAY_STATES }
+
+  scope :default_beamer, -> { where(is_default: true) }
+
+  delegate :owner, to: :tournament
+end
diff --git a/app/models/tournament.rb b/app/models/tournament.rb
index 1f02015..0fbe8a4 100644
--- a/app/models/tournament.rb
+++ b/app/models/tournament.rb
@@ -6,6 +6,7 @@ class Tournament < ApplicationRecord
   belongs_to :user
   has_many :teams, dependent: :destroy
   has_many :stages, dependent: :destroy
+  has_many :beamers, dependent: :destroy
 
   validates :name, presence: true
   validates :code, presence: true, uniqueness: true
diff --git a/app/serializers/beamer_serializer.rb b/app/serializers/beamer_serializer.rb
new file mode 100644
index 0000000..62d9fc6
--- /dev/null
+++ b/app/serializers/beamer_serializer.rb
@@ -0,0 +1,5 @@
+# frozen_string_literal: true
+
+class BeamerSerializer < ApplicationSerializer
+  attributes :name, :display_state, :is_default, :qr_code_url, :logo_url
+end
diff --git a/config/routes.rb b/config/routes.rb
index 0351e81..18aa961 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -17,6 +17,11 @@ Rails.application.routes.draw do
   resources :tournaments do
     resources :statistics, only: %i[index]
     resources :matches, only: %i[index]
+    resources :beamers, only: %i[index show create update destroy] do
+      collection do
+        get :by_name
+      end
+    end
     member do
       get :timer_end
       patch :set_timer_end
diff --git a/db/migrate/20260412230000_create_beamers.rb b/db/migrate/20260412230000_create_beamers.rb
new file mode 100644
index 0000000..f32c2cb
--- /dev/null
+++ b/db/migrate/20260412230000_create_beamers.rb
@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+class CreateBeamers < ActiveRecord::Migration[7.0]
+  def change
+    create_table :beamers do |t|
+      t.string :name, null: false
+      t.string :display_state, null: false, default: 'matches_all'
+      t.boolean :is_default, default: false
+      t.string :qr_code_url
+      t.string :logo_url
+      t.belongs_to :tournament, index: true, foreign_key: { on_delete: :cascade }, null: false
+      t.timestamps
+    end
+    add_index :beamers, %i[tournament_id name], unique: true
+  end
+end
diff --git a/spec/controllers/beamers_controller_spec.rb b/spec/controllers/beamers_controller_spec.rb
new file mode 100644
index 0000000..470f59c
--- /dev/null
+++ b/spec/controllers/beamers_controller_spec.rb
@@ -0,0 +1,194 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe BeamersController, type: :controller do
+  before do
+    @tournament = create(:tournament)
+    @owner = @tournament.owner
+    @beamer = create(:beamer, tournament: @tournament)
+    @default_beamer = create(:default_beamer, tournament: @tournament)
+  end
+
+  describe 'GET #index' do
+    it 'returns all beamers for the tournament' do
+      get :index, params: { tournament_id: @tournament.to_param }
+      expect(response).to be_successful
+      body = deserialize_response response
+      expect(body.length).to eq(2)
+    end
+  end
+
+  describe 'GET #show' do
+    it 'returns the beamer' do
+      get :show, params: { tournament_id: @tournament.to_param, id: @beamer.to_param }
+      expect(response).to be_successful
+      body = deserialize_response response
+      expect(body[:name]).to eq(@beamer.name)
+      expect(body[:display_state]).to eq(@beamer.display_state)
+    end
+
+    it 'returns 404 for nonexistent beamer' do
+      get :show, params: { tournament_id: @tournament.to_param, id: 999_999 }
+      expect(response).to have_http_status(:not_found)
+    end
+  end
+
+  describe 'GET #by_name' do
+    it 'returns beamer by name' do
+      get :by_name, params: { tournament_id: @tournament.to_param, name: @beamer.name }
+      expect(response).to be_successful
+      body = deserialize_response response
+      expect(body[:name]).to eq(@beamer.name)
+    end
+
+    it 'falls back to default beamer when name not found' do
+      get :by_name, params: { tournament_id: @tournament.to_param, name: 'nonexistent' }
+      expect(response).to be_successful
+      body = deserialize_response response
+      expect(body[:name]).to eq(@default_beamer.name)
+      expect(body[:is_default]).to be true
+    end
+
+    it 'falls back to default beamer when name param is missing' do
+      get :by_name, params: { tournament_id: @tournament.to_param }
+      expect(response).to be_successful
+      body = deserialize_response response
+      expect(body[:is_default]).to be true
+    end
+
+    it 'returns 404 when no beamers exist at all' do
+      empty_tournament = create(:tournament)
+      get :by_name, params: { tournament_id: empty_tournament.to_param, name: 'anything' }
+      expect(response).to have_http_status(:not_found)
+    end
+  end
+
+  describe 'POST #create' do
+    let(:valid_params) do
+      { name: 'new-beamer', display_state: 'groups', is_default: false }
+    end
+
+    context 'as owner' do
+      before(:each) { apply_authentication_headers_for @owner }
+
+      it 'creates a new beamer' do
+        expect {
+          post :create, params: { tournament_id: @tournament.to_param }.merge(valid_params)
+        }.to change(@tournament.beamers, :count).by(1)
+        expect(response).to have_http_status(:created)
+      end
+
+      it 'returns the created beamer' do
+        post :create, params: { tournament_id: @tournament.to_param }.merge(valid_params)
+        body = deserialize_response response
+        expect(body[:name]).to eq('new-beamer')
+        expect(body[:display_state]).to eq('groups')
+      end
+
+      it 'rejects invalid display_state' do
+        post :create, params: {
+          tournament_id: @tournament.to_param, name: 'bad', display_state: 'invalid'
+        }
+        expect(response).to have_http_status(:unprocessable_entity)
+      end
+
+      it 'rejects duplicate name in same tournament' do
+        post :create, params: {
+          tournament_id: @tournament.to_param, name: @beamer.name, display_state: 'matches_all'
+        }
+        expect(response).to have_http_status(:unprocessable_entity)
+      end
+    end
+
+    context 'as another user' do
+      before(:each) { apply_authentication_headers_for create(:user) }
+
+      it 'returns forbidden' do
+        post :create, params: { tournament_id: @tournament.to_param }.merge(valid_params)
+        expect(response).to have_http_status(:forbidden)
+      end
+    end
+
+    context 'unauthenticated' do
+      it 'returns unauthorized' do
+        post :create, params: { tournament_id: @tournament.to_param }.merge(valid_params)
+        expect(response).to have_http_status(:unauthorized)
+      end
+    end
+  end
+
+  describe 'PATCH #update' do
+    context 'as owner' do
+      before(:each) { apply_authentication_headers_for @owner }
+
+      it 'updates the display_state' do
+        patch :update, params: {
+          tournament_id: @tournament.to_param, id: @beamer.to_param,
+          display_state: 'during_game'
+        }
+        expect(response).to be_successful
+        body = deserialize_response response
+        expect(body[:display_state]).to eq('during_game')
+        expect(@beamer.reload.display_state).to eq('during_game')
+      end
+
+      it 'updates optional fields' do
+        patch :update, params: {
+          tournament_id: @tournament.to_param, id: @beamer.to_param,
+          qr_code_url: 'https://example.com/qr', logo_url: '/static/logo.png'
+        }
+        expect(response).to be_successful
+        @beamer.reload
+        expect(@beamer.qr_code_url).to eq('https://example.com/qr')
+        expect(@beamer.logo_url).to eq('/static/logo.png')
+      end
+
+      it 'rejects invalid display_state' do
+        patch :update, params: {
+          tournament_id: @tournament.to_param, id: @beamer.to_param,
+          display_state: 'bogus'
+        }
+        expect(response).to have_http_status(:unprocessable_entity)
+      end
+    end
+
+    context 'as another user' do
+      before(:each) { apply_authentication_headers_for create(:user) }
+
+      it 'returns forbidden' do
+        patch :update, params: {
+          tournament_id: @tournament.to_param, id: @beamer.to_param,
+          display_state: 'groups'
+        }
+        expect(response).to have_http_status(:forbidden)
+      end
+    end
+  end
+
+  describe 'DELETE #destroy' do
+    context 'as owner' do
+      before(:each) { apply_authentication_headers_for @owner }
+
+      it 'deletes the beamer' do
+        expect {
+          delete :destroy, params: {
+            tournament_id: @tournament.to_param, id: @beamer.to_param
+          }
+        }.to change(@tournament.beamers, :count).by(-1)
+        expect(response).to have_http_status(:no_content)
+      end
+    end
+
+    context 'as another user' do
+      before(:each) { apply_authentication_headers_for create(:user) }
+
+      it 'returns forbidden' do
+        delete :destroy, params: {
+          tournament_id: @tournament.to_param, id: @beamer.to_param
+        }
+        expect(response).to have_http_status(:forbidden)
+      end
+    end
+  end
+end
diff --git a/spec/factories/beamers.rb b/spec/factories/beamers.rb
new file mode 100644
index 0000000..e4dfa4e
--- /dev/null
+++ b/spec/factories/beamers.rb
@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+FactoryBot.define do
+  factory :beamer do
+    sequence(:name) { |n| "beamer-#{n}" }
+    display_state { 'matches_all' }
+    is_default { false }
+    tournament
+
+    factory :default_beamer do
+      name { 'default' }
+      is_default { true }
+    end
+  end
+end
diff --git a/spec/models/beamer_spec.rb b/spec/models/beamer_spec.rb
new file mode 100644
index 0000000..a842190
--- /dev/null
+++ b/spec/models/beamer_spec.rb
@@ -0,0 +1,58 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe Beamer, type: :model do
+  describe 'validation' do
+    it { should validate_presence_of :name }
+    it { should validate_presence_of :display_state }
+
+    it 'validates uniqueness of name scoped to tournament' do
+      beamer = create(:beamer)
+      duplicate = build(:beamer, name: beamer.name, tournament: beamer.tournament)
+      expect(duplicate).not_to be_valid
+    end
+
+    it 'allows same name in different tournaments' do
+      beamer = create(:beamer, name: 'projector')
+      other = build(:beamer, name: 'projector', tournament: create(:tournament))
+      expect(other).to be_valid
+    end
+
+    it 'validates display_state inclusion' do
+      beamer = build(:beamer, display_state: 'invalid_state')
+      expect(beamer).not_to be_valid
+    end
+
+    Beamer::DISPLAY_STATES.each do |state|
+      it "accepts display_state '#{state}'" do
+        beamer = build(:beamer, display_state: state)
+        expect(beamer).to be_valid
+      end
+    end
+  end
+
+  describe 'association' do
+    it { should belong_to :tournament }
+  end
+
+  describe 'scopes' do
+    describe '.default_beamer' do
+      it 'returns only default beamers' do
+        tournament = create(:tournament)
+        default = create(:default_beamer, tournament: tournament)
+        create(:beamer, tournament: tournament)
+
+        result = tournament.beamers.default_beamer
+        expect(result).to contain_exactly(default)
+      end
+    end
+  end
+
+  describe '#owner' do
+    it 'delegates to tournament' do
+      beamer = create(:beamer)
+      expect(beamer.owner).to eq(beamer.tournament.owner)
+    end
+  end
+end
diff --git a/spec/models/tournament_spec.rb b/spec/models/tournament_spec.rb
index a555abe..fde092b 100644
--- a/spec/models/tournament_spec.rb
+++ b/spec/models/tournament_spec.rb
@@ -29,6 +29,7 @@ RSpec.describe Tournament, type: :model do
     it { should belong_to :user }
     it { should have_many :teams }
     it { should have_many :stages }
+    it { should have_many :beamers }
   end
 
   describe '#matches' do
diff --git a/spec/routing/beamers_routing_spec.rb b/spec/routing/beamers_routing_spec.rb
new file mode 100644
index 0000000..b6dcce6
--- /dev/null
+++ b/spec/routing/beamers_routing_spec.rb
@@ -0,0 +1,43 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe BeamersController, type: :routing do
+  describe 'routing' do
+    it 'routes to #index' do
+      expect(get: '/tournaments/1/beamers').to route_to(
+        'beamers#index', tournament_id: '1'
+      )
+    end
+
+    it 'routes to #show' do
+      expect(get: '/tournaments/1/beamers/2').to route_to(
+        'beamers#show', tournament_id: '1', id: '2'
+      )
+    end
+
+    it 'routes to #by_name' do
+      expect(get: '/tournaments/1/beamers/by_name').to route_to(
+        'beamers#by_name', tournament_id: '1'
+      )
+    end
+
+    it 'routes to #create' do
+      expect(post: '/tournaments/1/beamers').to route_to(
+        'beamers#create', tournament_id: '1'
+      )
+    end
+
+    it 'routes to #update via PATCH' do
+      expect(patch: '/tournaments/1/beamers/2').to route_to(
+        'beamers#update', tournament_id: '1', id: '2'
+      )
+    end
+
+    it 'routes to #destroy' do
+      expect(delete: '/tournaments/1/beamers/2').to route_to(
+        'beamers#destroy', tournament_id: '1', id: '2'
+      )
+    end
+  end
+end