diff --git a/CHANGELOG.md b/CHANGELOG.md
index 13df636ab8..07d3d68c52 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1152,3 +1152,4 @@
 [@fwolfst]: https://github.com/fwolfst
 [@maxprokopiev]: https://github.com/maxprokopiev
 [@ytjmt]: https://github.com/ytjmt
+[@cdudas17]: https://github.com/cdudas17
diff --git a/changelog/new_env_cop.md b/changelog/new_env_cop.md
new file mode 100644
index 0000000000..3a97499a04
--- /dev/null
+++ b/changelog/new_env_cop.md
@@ -0,0 +1 @@
+* [#1375](https://github.com/rubocop/rubocop-rails/pull/1375): Add new `Rails/Env` cop. ([@cdudas17][])
diff --git a/config/default.yml b/config/default.yml
index 0e7d183460..4099cfefa2 100644
--- a/config/default.yml
+++ b/config/default.yml
@@ -441,6 +441,11 @@ Rails/EnumUniqueness:
   Include:
     - app/models/**/*.rb
 
+Rails/Env:
+  Description: 'Use Feature Flags instead of `Rails.env`.'
+  Enabled: pending
+  VersionAdded: '<<next>>'
+
 Rails/EnvLocal:
   Description: 'Use `Rails.env.local?` instead of `Rails.env.development? || Rails.env.test?`.'
   Enabled: pending
diff --git a/lib/rubocop/cop/rails/env.rb b/lib/rubocop/cop/rails/env.rb
new file mode 100644
index 0000000000..e4bb0efe4b
--- /dev/null
+++ b/lib/rubocop/cop/rails/env.rb
@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+module RuboCop
+  module Cop
+    module Rails
+      # Checks for usage of `Rails.env` which can be replaced with Feature Flags
+      #
+      # @example
+      #
+      #   # bad
+      #   Rails.env.development? || Rails.env.production? || Rails.env.local?
+      #
+      #   # good
+      #   if FeatureFlag.enabled?(:new_feature)
+      #     # new feature code
+      #   end
+      #
+      class Env < Base
+        MSG = 'Use Feature Flags instead of `Rails.env`.'
+        RESTRICT_ON_SEND = %i[env].freeze
+
+        def on_send(node)
+          return unless node.receiver&.const_name == 'Rails'
+          return unless node.parent&.method_name
+
+          add_offense(node)
+        end
+      end
+    end
+  end
+end
diff --git a/lib/rubocop/cop/rails_cops.rb b/lib/rubocop/cop/rails_cops.rb
index b7eddc4fe4..c966c86f13 100644
--- a/lib/rubocop/cop/rails_cops.rb
+++ b/lib/rubocop/cop/rails_cops.rb
@@ -48,6 +48,7 @@
 require_relative 'rails/enum_hash'
 require_relative 'rails/enum_syntax'
 require_relative 'rails/enum_uniqueness'
+require_relative 'rails/env'
 require_relative 'rails/env_local'
 require_relative 'rails/environment_comparison'
 require_relative 'rails/environment_variable_access'
diff --git a/spec/rubocop/cop/rails/env_spec.rb b/spec/rubocop/cop/rails/env_spec.rb
new file mode 100644
index 0000000000..ca06645f46
--- /dev/null
+++ b/spec/rubocop/cop/rails/env_spec.rb
@@ -0,0 +1,30 @@
+# frozen_string_literal: true
+
+RSpec.describe RuboCop::Cop::Rails::Env, :config do
+  it 'registers an offense for `Rails.env.development? || Rails.env.test?`' do
+    expect_offense(<<~RUBY)
+      Rails.env.development? || Rails.env.test?
+                                ^^^^^^^^^ Use Feature Flags instead of `Rails.env`.
+      ^^^^^^^^^ Use Feature Flags instead of `Rails.env`.
+    RUBY
+  end
+
+  it 'registers an offense for `Rails.env.production?`' do
+    expect_offense(<<~RUBY)
+      Rails.env.production?
+      ^^^^^^^^^ Use Feature Flags instead of `Rails.env`.
+    RUBY
+  end
+
+  it 'does not register an offense for `Rails.env`' do
+    expect_no_offenses(<<~RUBY)
+      Rails.env
+    RUBY
+  end
+
+  it 'does not register an offense for unrelated config' do
+    expect_no_offenses(<<~RUBY)
+      Rails.environment
+    RUBY
+  end
+end