McCormick, McCormack or MacCormack may refer to:
People with the surname McCormick or McCormack:
- McCormick (surname)
- Eric McCormack, actor who played the character Will Truman from NBC's Will & Grace
- Cyrus McCormick, inventor
- David McCormick, business executive, former US Treasury Under Secretary for International Affairs
- Robert R. McCormick, newspaper publisher
- Lynde D. McCormick, United States Navy Admiral
- John McCormack, famous tenor singer in early 20th century Ireland
- Mark McCormack, sports marketing pioneer and writer, founder of International Management Group
- Mary McCormack, is an American actress and older sister of Will McCormack.
- Will McCormack, is an American actor and younger brother of Mary McCormack.
- Cami McCormick, a CBS news reporter
- Jill McCormick, American fashion model and wife of Eddie Vedder
- Malcolm McCormick, American Hiphop artist from Pittsburgh aka Mac Miller.
In business:
- McCormick & Company, an American food company specializing in spices
- McCormick & Schmick's, an American restaurant chain specializing in seafood
- McCormick Harvesting Machine Company, the manufacturer of the first mechanical reaper
- McCormick Distilling Company, an American distillery
- McCormick Tractors, a manufacturer of tractors, headquartered in Fabbrico, Italy
In education:
- McCormick Observatory at the University of Virginia
- McCormick Theological Seminary of the Presbyterian Church (USA)
- Robert R. McCormick School of Engineering and Applied Science, an undergraduate school at Northwestern University
- Alexander C. McCormickStudied at Dawson Community College and Helena College of Technology
In mathematics:
- MacCormack method, a discretization scheme for the numerical solution of partial differential equations.
In sports:
- McCormick Place, exposition complex in Chicago, Illinois
- McCormick Field, Minor League Baseball park in Asheville, North Carolina
Other:
- USS McCormick (DD-223), Clemson-class destroyer in the US Navy during World War II
- USS Lynde McCormick (DDG-8), a Charles F. Adams class guided missile destroyer launched in 1959
- Hardcastle and McCormick, a 1980s television series
- Kenny McCormick, a fictional character in animated TV show South Park
- McCormick Dam, a 335 MW hydroelectric generating station in Baie-Comeau, Quebec
- Ricky McCormick murder notes, encrypted but not yet deciphered messages found on the body of Ricky McCormick in 1999 in Missouri