Mark Nelson

Mark Nelson or Marc Nelson may refer to:


 * Mark Nelson (actor) (born 1955), American theater actor, director, and acting teacher
 * Mark Nelson (cricketer) (born 1986), English cricketer
 * Mark Nelson (police officer), superintendent of the North Dakota Highway Patrol
 * Mark Nelson (artist), artist whose work has appeared in role-playing games and comic books
 * Mark Nelson (Chicago artist) (born 1957), artist who has contributed public art to the Chicago area
 * Mark Nelson (boxing referee), boxing referee from Maplewood, Minnesota
 * Mark Nelson (musician), musician with the band Pan American
 * Mark Nelson (Canadian football) (born 1956), defensive coordinator for the Edmonton Eskimos
 * Mark Nelson (offensive lineman)
 * Mark Nelson (footballer) (born 1969), Scottish former footballer
 * Mark Nelson (video game designer), video game designer
 * Mark Nelson (scientist), American ecologist
 * Mark L. Nelson, American chemist
 * Mark T. Nelson, American physiologist
 * Mark W. Nelson, American academic, accountant, and dean of Cornell University's Samuel Curtis Johnson Graduate School of Management
 * Marc Nelson (singer) (b. 1971), American singer-songwriter and former member of R&B group Boyz II Men
 * Marc Nelson (entertainer), Australian host in the Philippines