diff --git a/app/controllers/admin/collections_controller.rb b/app/controllers/admin/collections_controller.rb
index 4701500f9f..2698abbd45 100644
--- a/app/controllers/admin/collections_controller.rb
+++ b/app/controllers/admin/collections_controller.rb
@@ -4,13 +4,48 @@ module Admin
   class CollectionsController < BaseController
     before_action :set_account
     before_action :set_collection, only: :show
+    before_action :set_collections, except: :show
+
+    PER_PAGE = 20
+
+    def index
+      authorize [:admin, :collection], :index?
+      @collection_batch_action = Admin::CollectionBatchAction.new
+    end
 
     def show
       authorize @collection, :show?
     end
 
+    def batch
+      authorize [:admin, :collection], :index?
+
+      @collection_batch_action = Admin::CollectionBatchAction.new(admin_collection_batch_action_params.merge(current_account: current_account, report_id: params[:report_id], type: 'report'))
+
+      @collection_batch_action.save!
+    rescue ActionController::ParameterMissing
+      flash[:alert] = I18n.t('admin.collections.no_collection_selected')
+    ensure
+      redirect_to after_create_redirect_path
+    end
+
     private
 
+    def after_create_redirect_path
+      report_id = @collections_batch_action&.report_id || params[:report_id]
+
+      if report_id.present?
+        admin_report_path(report_id)
+      else
+        admin_account_collections_path(params[:account_id], params[:page])
+      end
+    end
+
+    def admin_collection_batch_action_params
+      params
+        .expect(admin_collection_batch_action: [collection_ids: []])
+    end
+
     def set_account
       @account = Account.find(params[:account_id])
     end
@@ -18,5 +53,9 @@ module Admin
     def set_collection
       @collection = @account.collections.includes(accepted_collection_items: :account).find(params[:id])
     end
+
+    def set_collections
+      @collections = @account.collections.includes(accepted_collection_items: :account).page(params[:page]).per(PER_PAGE)
+    end
   end
 end
diff --git a/app/models/admin/collection_batch_action.rb b/app/models/admin/collection_batch_action.rb
new file mode 100644
index 0000000000..d08f17d747
--- /dev/null
+++ b/app/models/admin/collection_batch_action.rb
@@ -0,0 +1,42 @@
+# frozen_string_literal: true
+
+class Admin::CollectionBatchAction < Admin::BaseAction
+  TYPES = %w(
+    report
+    remove_from_report
+  ).freeze
+
+  attr_accessor :collection_ids
+
+  private
+
+  def process_action!
+    return unless collection_ids
+
+    add_to_report!
+  end
+
+  def add_to_report!
+    @report = Report.new(report_params) unless with_report?
+
+    @report.collections = (@report.collections + selected_collections).uniq
+    @report.save!
+    @report_id = @report.id
+  end
+
+  def selected_collections
+    @report.target_account.collections.where(id: collection_ids)
+  end
+
+  def report_params
+    { account: current_account, target_account: target_account }
+  end
+
+  def collection
+    @collection ||= Collection.where(id: collection_ids.first)
+  end
+
+  def target_account
+    @target_account ||= collection.first.account
+  end
+end
diff --git a/app/views/admin/collections/index.html.haml b/app/views/admin/collections/index.html.haml
new file mode 100644
index 0000000000..10c9e65b5e
--- /dev/null
+++ b/app/views/admin/collections/index.html.haml
@@ -0,0 +1,49 @@
+- content_for :page_title do
+  = t('admin.collections.title', name: @account.pretty_acct)
+
+.filters
+  .filter-subset
+    %ul
+      %li= filter_link_to t('generic.all'), id: nil
+  .back-link
+    - if params[:report_id]
+      = link_to admin_report_path(params[:report_id].to_i) do
+        = material_symbol 'chevron_left'
+        = t('admin.collections.back_to_report')
+    - else
+      = link_to admin_account_path(@account.id) do
+        = material_symbol 'chevron_left'
+        = t('admin.collections.back_to_account')
+
+%hr.spacer/
+
+
+= form_with model: @collection_batch_action, url: batch_admin_account_collections_path(@account.id) do |f|
+  = hidden_field_tag :page, params[:page] || 1
+  = hidden_field_tag :report_id, params[:report_id]
+
+  .batch-table
+    .batch-table__toolbar
+      %label.batch-table__toolbar__select.batch-checkbox-all
+        = check_box_tag :batch_checkbox_all, nil, false
+      .batch-table__toolbar__actions
+        - unless @collections.empty?
+          - if params[:report_id]
+            = f.button safe_join([material_symbol('add'), t('admin.collections.batch.add_to_report', id: params[:report_id])]),
+                       class: 'table-action-link',
+                       data: { confirm: t('admin.reports.are_you_sure') },
+                       name: :report,
+                       type: :submit
+          - else
+            = f.button safe_join([material_symbol('flag'), t('admin.collections.batch.report')]),
+                       class: 'table-action-link',
+                       data: { confirm: t('admin.reports.are_you_sure') },
+                       name: :report,
+                       type: :submit
+  .batch-table__body
+    - if @collections.empty?
+      = nothing_here 'nothing-here--under-tabs'
+    - else
+      = render partial: 'admin/shared/collection_batch_row', collection: @collections, as: :collection, locals: { f: f }
+
+= paginate @collections
diff --git a/app/views/admin/reports/show.html.haml b/app/views/admin/reports/show.html.haml
index 2d20b6a969..0aa2f69ba5 100644
--- a/app/views/admin/reports/show.html.haml
+++ b/app/views/admin/reports/show.html.haml
@@ -67,17 +67,19 @@
     %summary
       = t 'admin.reports.collections', count: @report.collections.size
 
-    %form
+    = form_with model: @form, url: batch_admin_account_collections_path(@report.target_account_id, report_id: @report.id) do |f|
       .batch-table
         .batch-table__toolbar
           %label.batch-table__toolbar__select.batch-checkbox-all
-            -# = check_box_tag :batch_checkbox_all, nil, false
           .batch-table__toolbar__actions
+            = link_to safe_join([material_symbol('add'), t('admin.reports.add_to_report')]),
+                      admin_account_collections_path(@report.target_account_id, report_id: @report.id),
+                      class: 'table-action-link'
         .batch-table__body
           - if @report.collections.empty?
             = nothing_here 'nothing-here--under-tabs'
           - else
-            = render partial: 'admin/shared/collection_batch_row', collection: @report.collections, as: :collection
+            = render partial: 'admin/shared/collection_batch_row', collection: @report.collections, as: :collection, locals: { f: f }
 
 - if @report.unresolved?
   %hr.spacer/
diff --git a/app/views/admin/shared/_collection_batch_row.html.haml b/app/views/admin/shared/_collection_batch_row.html.haml
index 8bf7857e95..8f42ab8db4 100644
--- a/app/views/admin/shared/_collection_batch_row.html.haml
+++ b/app/views/admin/shared/_collection_batch_row.html.haml
@@ -1,5 +1,5 @@
 .batch-table__row
   %label.batch-table__row__select.batch-checkbox
-    -# = f.check_box :collection_ids, { multiple: true, include_hidden: false }, collection.id
+    = f.check_box :collection_ids, { multiple: true, include_hidden: false }, collection.id
   .batch-table__row__content
     = render partial: 'admin/shared/collection', object: collection
diff --git a/config/locales/en.yml b/config/locales/en.yml
index b0533881ba..4a95e738b4 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -345,12 +345,19 @@ en:
       updated_msg: Announcement successfully updated!
     collections:
       accounts: Accounts
+      back_to_account: Back to account page
+      back_to_report: Back to report page
+      batch:
+        add_to_report: 'Add to report #%{id}'
+        report: Report
       collection_title: Collection by %{name}
       contents: Contents
+      no_collection_selected: No collections were changed as none were selected
       number_of_accounts:
         one: 1 account
         other: "%{count} accounts"
       open: Open
+      title: Account collections - @%{name}
       view_publicly: View publicly
     critical_update_pending: Critical update pending
     custom_emojis:
diff --git a/config/routes/admin.rb b/config/routes/admin.rb
index 770a9cd777..a48defb3b9 100644
--- a/config/routes/admin.rb
+++ b/config/routes/admin.rb
@@ -157,7 +157,7 @@ namespace :admin do
     resource :reset, only: [:create]
     resource :action, only: [:new, :create], controller: 'account_actions'
 
-    resources :collections, only: [:show]
+    resources :collections, only: [:index, :show], concerns: :batch
     resources :statuses, only: [:index, :show], concerns: :batch
 
     resources :relationships, only: [:index]
diff --git a/spec/models/admin/collection_batch_action_spec.rb b/spec/models/admin/collection_batch_action_spec.rb
new file mode 100644
index 0000000000..0ed57817e0
--- /dev/null
+++ b/spec/models/admin/collection_batch_action_spec.rb
@@ -0,0 +1,50 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe Admin::CollectionBatchAction do
+  subject do
+    described_class.new(
+      current_account:,
+      collection_ids:,
+      report_id:,
+      type:
+    )
+  end
+
+  let(:account) { Fabricate(:account) }
+  let(:target_account) { Fabricate(:account) }
+  let(:current_account) { Fabricate(:admin_user).account }
+  let(:collection) { Fabricate(:collection, account: account) }
+  let(:collection_ids) { [collection.id] }
+  let(:report) { Fabricate(:report, account: target_account, target_account: account) }
+  let(:type) { 'report' }
+
+  before 'create collection report' do
+    report.collections << collection
+    report.save!
+  end
+
+  describe '#save!' do
+    context 'when with_report? is true' do
+      let(:other_collection) { Fabricate(:collection, account: account) }
+      let(:report_id) { report.id }
+
+      it 'creates no report and adds the collection to the existing report' do
+        collection_ids << other_collection.id
+
+        expect { subject.save! }.to_not change(Report, :count)
+        expect(report.collections).to include(other_collection)
+      end
+    end
+
+    context 'when with_report? is false' do
+      let(:report_id) { nil }
+
+      it 'creates a new report from the collection_ids' do
+        expect { subject.save! }.to change(Report, :count).by(1)
+        expect(Report.last.collections).to include(collection)
+      end
+    end
+  end
+end
diff --git a/spec/requests/admin/collections_spec.rb b/spec/requests/admin/collections_spec.rb
index 0e87e277ae..6cb3a1ec2d 100644
--- a/spec/requests/admin/collections_spec.rb
+++ b/spec/requests/admin/collections_spec.rb
@@ -3,13 +3,19 @@
 require 'rails_helper'
 
 RSpec.describe 'Admin Collections' do
+  let(:account) { Fabricate(:account) }
+  let(:other_account) { Fabricate(:account) }
+  let(:collection) { Fabricate(:collection, account: account) }
+  let!(:second_collection) { Fabricate(:collection, account: account) }
+  let(:report) { Fabricate(:report, account: other_account, target_account: account) }
+
+  before do
+    sign_in Fabricate(:admin_user)
+  end
+
   describe 'GET /admin/accounts/:account_id/collections/:id' do
     let(:collection) { Fabricate(:collection) }
 
-    before do
-      sign_in Fabricate(:admin_user)
-    end
-
     it 'returns success' do
       get admin_account_collection_path(collection.account_id, collection)
 
@@ -17,4 +23,34 @@ RSpec.describe 'Admin Collections' do
         .to have_http_status(200)
     end
   end
+
+  describe 'GET /admin/accounts/:account_id/collections/' do
+    it 'returns http success' do
+      get admin_account_collections_path(account_id: account.id, id: collection.id)
+      expect(response).to have_http_status(200)
+    end
+  end
+
+  describe 'POST /admin/accounts/:account_id/collections/batch' do
+    subject { post batch_admin_account_collections_path(account_id: account.id, report_id: report_id, admin_collection_batch_action: { collection_ids: [collection.id, second_collection.id] }) }
+
+    context 'with a valid report' do
+      let(:report_id) { report.id }
+
+      it 'redirects to the report page' do
+        report.collections << collection
+        subject
+        expect(response).to redirect_to(admin_report_path(report.id))
+      end
+    end
+
+    context 'with an invalid report' do
+      let(:report_id) { nil }
+
+      it 'redirects to the account collections page' do
+        subject
+        expect(response).to redirect_to(admin_account_collections_path(account.id))
+      end
+    end
+  end
 end