William Forbes
William Forbes is the name of the following people:
- William Forbes, 7th Laird of Tolquhon († 1595), Scottish landowner
- William Forbes (soldier) (1614–1654), Scottish soldier in the Swedish service
- William Forbes, 6th Baronet (1739–1806), Scottish nobleman and banker
- William Alexander Forbes (1855-1883), English zoologist
- William Cameron Forbes (1870–1959), American diplomat, politician and writer
