Donald De Souza is a fictional character in the British ITV soap opera Emmerdale, played by Michael Jayston. Appearing between 2007 and 2008, Donald arrives as the husband of Nicola Blackstock, although their marriage quickly falls apart. During his year in the programme, Donald falls out with both his children, Anna and Miles, before he dies of a heart attack.

Michael A. James, known professionally as Michael Jayston, was an English actor. He played Nicholas II of Russia in the film Nicholas and Alexandra (1971). He also made many television appearances, which included portraying Peter Guillam in 1979 miniseries Tinker Tailor Soldier Spy, playing the Valeyard in all fourteen episodes of the Doctor Who serial The Trial of a Time Lord (1986), and appearing in the Only Fools and Horses episode "Time on Our Hands" (1996) as Raquel's father, James.