Malcolm-Jamal Warner (August 18, 1970 – July 20, 2025) was an American actor, musician, and poet. He rose to prominence for his role as Theodore "Theo" Huxtable on the NBC sitcom The Cosby Show (1984–1992), which earned him a nomination for Outstanding Supporting Actor in a Comedy Series at the 38th Primetime Emmy Awards.

His other starring television roles include Malcolm McGee in the UPN sitcom Malcolm & Eddie (1996–2000), Kurdy Malloy in Jeremiah (2002–2004), Dr. Alex Reed in the sitcom Reed Between the Lines (2011–2015), and Dr. AJ Austin in the Fox medical drama The Resident (2018–2023). Warner also had recurring roles in many shows including The Magic School Bus (1994–1997), Community (2011–2012), Major Crimes (2013–2016), Sons of Anarchy (2014), American Horror Story (2014–2015), Suits (2016–2017), Girlfriends' Guide to Divorce (2017–2018), Sneaky Pete (2017–2019), and 9-1-1 (2024). He occasionally acted in films such as Drop Zone (1994), Restaurant (1998), and Fool's Gold (2008).

Outside of acting, Warner was a vocalist and bass guitarist. He won the 2015 Grammy Award for Best Traditional R&B Performance for his contribution to a cover of Stevie Wonder's "Jesus Children of America" and was nominated for Best Spoken Word Poetry Album in 2022.

Warner died in a drowning accident in July 2025, aged 54.