diff --git a/changelog/fix_autocorrect_for_style_redundant_condition_with_hash.md b/changelog/fix_autocorrect_for_style_redundant_condition_with_hash.md
new file mode 100644
index 00000000000..87533203064
--- /dev/null
+++ b/changelog/fix_autocorrect_for_style_redundant_condition_with_hash.md
@@ -0,0 +1 @@
+* [#10605](https://github.com/rubocop/rubocop/issues/10605): Fix autocorrect for `Style/RedundantCondition` if argument for method in else branch is hash without braces. ([@nobuyo][])
diff --git a/lib/rubocop/cop/style/redundant_condition.rb b/lib/rubocop/cop/style/redundant_condition.rb
index 6820261eb43..a3ca00156cd 100644
--- a/lib/rubocop/cop/style/redundant_condition.rb
+++ b/lib/rubocop/cop/style/redundant_condition.rb
@@ -157,6 +157,8 @@ def else_source(else_branch)
         def else_source_if_has_method(else_branch)
           if require_parentheses?(else_branch.first_argument)
             "(#{else_branch.first_argument.source})"
+          elsif require_braces?(else_branch.first_argument)
+            "{ #{else_branch.first_argument.source} }"
           else
             else_branch.first_argument.source
           end
@@ -165,6 +167,8 @@ def else_source_if_has_method(else_branch)
         def else_source_if_has_assignment(else_branch)
           if require_parentheses?(else_branch.expression)
             "(#{else_branch.expression.source})"
+          elsif require_braces?(else_branch.expression)
+            "{ #{else_branch.expression.source} }"
           else
             else_branch.expression.source
           end
@@ -196,6 +200,10 @@ def require_parentheses?(node)
             (node.respond_to?(:semantic_operator?) && node.semantic_operator?)
         end
 
+        def require_braces?(node)
+          node.hash_type? && !node.braces?
+        end
+
         def without_argument_parentheses_method?(node)
           node.send_type? && !node.arguments.empty? &&
             !node.parenthesized? && !node.operator_method? && !node.assignment_method?
diff --git a/spec/rubocop/cop/style/redundant_condition_spec.rb b/spec/rubocop/cop/style/redundant_condition_spec.rb
index 6ef3c05d805..88332d42e69 100644
--- a/spec/rubocop/cop/style/redundant_condition_spec.rb
+++ b/spec/rubocop/cop/style/redundant_condition_spec.rb
@@ -292,6 +292,36 @@ def test
         RUBY
       end
 
+      it 'registers an offense and corrects when the branches contains method call with braced hash' do
+        expect_offense(<<~RUBY)
+          if foo
+          ^^^^^^ Use double pipes `||` instead.
+            bar foo
+          else
+            bar({ baz => quux })
+          end
+        RUBY
+
+        expect_correction(<<~RUBY)
+          bar foo || { baz => quux }
+        RUBY
+      end
+
+      it 'registers an offense and corrects when the branches contains method call with non-braced hash' do
+        expect_offense(<<~RUBY)
+          if foo
+          ^^^^^^ Use double pipes `||` instead.
+            bar foo
+          else
+            bar baz => quux
+          end
+        RUBY
+
+        expect_correction(<<~RUBY)
+          bar foo || { baz => quux }
+        RUBY
+      end
+
       it 'does not register offenses when using `nil?` and the branches contains assignment' do
         expect_no_offenses(<<~RUBY)
           if foo.nil?