Newnam is a surname occurring from medieval times in Britain.
People bearing it include:
Thomas Newnam (died 1775), British explorer of Pen Park Hole
Pat Newnam (1880–1938), American baseball player
Frank Newnam, Jr. (fl. 1946-69), American third partner in Lockwood, Andrews & Newnam civil-engineering partnership & president of ASCE
Boyd Newnam (fl. 1967-1971), American running trainer of Earl Owens
Brendan Francis Newnam (born c. 1976), American radio host
Scott Newnam (fl. since 2000), American audio marketer
Sarah Newnam (fl. 2009), Dartmouth ice hockey co-Captain, 2008–09
Ben Newnam (born 1991), American soccer player