詹姆斯·马库斯（James Marcus，1942年6月23日-），英国男演员。他第一次出现在电视上是 BBC 节目 Hello， Good Evening and Welcome （1968）。他最出名的是他在斯坦利·库布里克 （Stanley Kubrick） 备受争议的电影《发条橙》（1971 年）中饰演的流氓之一乔吉。

James Marcus was a British actor. His first appearance on TV was the BBC show Hello, Good Evening and Welcome (1968). He is best known for his performance as Georgie, one of the droogs in Stanley Kubrick's controversial film A Clockwork Orange (1971) and for playing the lead role of station chief Sidney Tate in the 1986 TV movie and the subsequent first three seasons of ITV drama London's Burning from 1988 to 1990. In 1989, Marcus wrote and directed the movie Tank Malling starring Ray Winstone and Amanda Donohoe. In August 2024, the actors union Equity announced that Marcus had passed away. It later transpired that he had died some four years previously on 4th May, 2020.