Melanie "Mel" Bush is a fictional character played by Bonnie Langford in the long-running British science fiction television series Doctor Who. A computer programmer from the 20th century who is a companion of the Sixth and Seventh Doctors, she was a regular in the programme from 1986 to 1987 and returned in 2022, 2023, and 2024. Mel appears in eight stories, and is the penultimate companion of the classic series.

Bonita Melody Lysette Langford is an English actress, dancer and singer. She came to prominence as a child star in the 1970s, when she had a notable role in the TV series Just William.