William Forrest

• William Forrest (actor), American actor
• William Forrest (Australian politician), Australian pastoralist, businessman and politician
• William Forrest (poet), English priest and poet
• William [Charles Forrest], British Army general
• William [Duff Forrest], Canadian politician
• William H. Forrest, American slave trader and Confederate leader under his brother Nathan Bedford Forrest's command
• Bill Forrest, football manager