McMorrow is an Irish surname, derived from the Gaelic mac Murchada. Notable people with the surname include:

• Gerald McMorrow (born 1970), British director and writer of the short film Thespian X (2002)
• James Vincent McMorrow (born 1983), Irish folk musician
• John P. McMorrow (1926–2008), American politician
• Judith A. McMorrow (born 1955), American legal scholar
• Liam McMorrow (born 1987), Canadian professional basketball player
• Mallory McMorrow (born 1986), American politician
• Mary Ann McMorrow (1930–2013), Illinois Supreme Court justice
• Melissa McMorrow (born 1981), American boxer
• Michael McMorrow (born 1963), American musician, composer, and producer, and founding member of jam band Stolen Ogre
• Scott McMorrow, American playwright and actor
• Sean McMorrow (born 1982), Canadian ice hockey winger
• William J. McMorrow, American businessman