David Alexander may refer to:

Entertainers

• David Alexander (director) (1914–1983), American television director
• Dave Alexander (blues musician) (1938–2012), American West Coast blues pianist & bassist
• David M. Alexander (born 1945), American writer
• Dave Alexander (musician) (1947–1975), American bassist for Iggy Pop & The Stooges
• David Alexander (singer) (1929–1995), Welsh singer and entertainer

Politicians

• David W. Alexander (1812–1887), Los Angeles County Board of Supervisors
• David Lindo Alexander (1842–1922), British lawyer and Jewish community leader
• David Alexander (Tennessee politician) (born 1952), American state legislator in Tennessee
• David Alexander (Scottish politician) (born 1958), Scottish leader of Falkirk local authority, Scotland
• David J. Alexander (born 1981), member of the Connecticut House of Representatives

Sportsmen

• David Alexander (footballer) (1869–1941), Scottish footballer
• David Alexander (American football) (born 1964), American former NFL player
• David Alexander (rugby league) (born 1968), Australian former NSWRL/ARL player

Others

• David Alexander (college president) (1932–2010), American academic, president of Pomona College and US National Secretary to the Rhodes Trust
• David Alexander (Royal Marines officer) (1926–2017), British Royal Marines officer
• David T. Alexander (born 1947), Canadian painter