David McKenzie may refer to:
- David McKenzie (economist), lead economist at the World Bank's Development Research Group, Finance and Private Sector Development Unit
- David McKenzie (Victorian politician), member of the Australian House of Representatives
- David McKenzie (South Australian politician) (1842–1919), member of the South Australian House of Assembly
- David McKenzie (sprinter) (born 1970), British track and field athlete
- David McKenzie (cyclist) (born 1974), Australian cyclist
- David McKenzie (fencer) (1936–1981), Australian fencer
- David McKenzie (golfer) (born 1967), Australian golfer
- David McKenzie (footballer) (born 1942), Australian footballer