Marcus () is a Latin praenomen, or personal name, which was one of the most common names throughout Roman history. The feminine form is Marca or Marcia.
Gerda Fredrika Marcus (1880–1952) was a Swedish journalist and philanthropist who was deeply concerned with social issues. After contributing to Swedish newspapers from Berlin in 1907, she worked for Svenska Dagbladet first in Sweden and later as a foreign correspondent in Vienna where she lived from 1923 to 1933.
Marcus Pattillo (born September 29, 1977, in Kennett, MO) is an American former Major League Baseball (MLB) umpire, who worked as a fill-in in during 2014 and 2015 MLB seasons. He wore number 18.
Mr. Marcus (born September 4, 1970) is the stage name of Jesse Spencer, an American actor and director known for acting in or directing over 1,800 pornographic films.
In 2009, he was inducted into the AVN Awards Hall of Fame.