William Nicholls
William or Bill Nicholls may refer to:
- William Nicholls (theologian), English clergyman and theologian
- Sir William Nicholls (Royal Marines officer), British Royal Marines general
- William Henry Nicholls, Australian amateur botanist
- Billy Nicholls, British singer, songwriter, composer, record producer, and musical director
- Bill Nicholls (Australian footballer), Australian rules footballer
- Bill Nicholls (Vanuatuan footballer), Vanuatuan footballer
- Will Nicholls, British photographer and film-maker