Rueben Grundy is a Black American actor whose exact birthday and birthplace are not publicly available in major sources. He has been active since 1987, making his earliest screen credit in The Bold and the Beautiful, and has since accumulated over 65 film and television credits. He is best known for playing Ernest Bennett in 13 episodes of A Different World (1989–1990) and Judge Oliver Young on General Hospital (2021–2022, 2024).

His most notable film credits include a Businessman in The Pursuit of Happyness (2006, starring Will Smith), a Street Reporter in The Princess Diaries (2001, with Anne Hathaway), a Buyer in Yours, Mine & Ours (2005, with Dennis Quaid), Reporter Reuben in Mad City (1997, with John Cusack), Johnson in Dopamine (2003), John McMillan in Inferno (2002), and a Guy in Dead Man on Campus (1998). On television he is also known for Stuart "Stu" Fraser in For All Mankind (2026, 5 episodes, Apple TV+), Jake in Grey's Anatomy (2018–2020, 2 episodes), Ian in 24 (2007), Dr. Peter Ryan in The Young and the Restless (2007–2008, 11 episodes), Attorney Jerry in Days of Our Lives (2008–2010), Agent Rice in CSI: Miami (2004), Dr. Jessup in Charmed (2005), and Officer Dexter in Bosch (2017), with additional credits in Truth Be Told, American Crime Story, 9-1-1, Goliath, Bones, Shameless, Unbelievable, Jane the Virgin, Criminal Minds, NCIS, NCIS: Origins, and Parenthood.