Sylvester as a single name can refer to:

• Pope Sylvester I
• Pope Sylvester II
• Antipope Sylvester III
• Sylvester the cat
• Sylvester James, disco performer

Sylvester is also the name of several places:

• Sylvester, Georgia
• Sylvester, West Virginia
• Sylvester, Wisconsin

Sylvester as an abstract can refer to:

• Sylvester and the Magic Pebble