Newmark is a surname. Notable people with the surname include:

• Andy Newmark, American musician
• Bobby Newmark, fictional character in novel
• Brooks Newmark (born 1958), British politician, Member of Parliament for Braintree
• Craig Newmark, founder of Craigslist
• Dave Newmark, former basketball player
• Harris Newmark, former businessman and historian
• Joseph Newmark (1799–1881), Prussian-born American rabbi.
• Nathan M. Newmark, structural engineer
• Peter Newmark (1916–2011), an English professor of translation

• Newmark-beta method, numerical integration method
• Newmark Group, a commercial real estate company
• Newmark's influence chart, method of showing soil pressure
• Newmark's sliding block, a calculation method in engineering
• Newmark Theatre in Portland, Oregon
• CUNY Newmark Journalism School in New York, NY
• Newmark Ground Water Contamination Site in San Bernardino, California