Lauren MacMullan is an animation director who used to work on The Simpsons. Her first primetime TV job was on The Critic, followed by directing for King of the Hill. She went on to become the supervising director and designer for Mission Hill. After the show was cancelled quickly, she got a job directing on The Simpsons, and stayed for three seasons. She also has directed some episodes of Avatar: The Last Airbender, and won an Annie award for storyboarding on that show.
MacMullan was a sequence director on The Simpsons Movie.