Fiorello may refer to:

• Fiorello!, a Broadway musical
• Fiorello! (album), a 1960 album by Oscar Peterson
• Rosario Fiorello, also known as simply Fiorello, Italian singer and TV host
• Fiorello H. La Guardia, former mayor of New York City
• Fiorello I and Fiorello II, thoroughbred showjumpers ridden by Raimondo D'Inzeo

• Leslie Pennell
• Leslie Peterson (disambiguation)
• Leslie Peter Wenham
• Leslie Phillips (cricketer)
• Leslie Phillips (disambiguation)
• Leslie P. Hume
• Leslie Pinckney Hill
• Leslie pine
• Leslie Pine
• Leslie Pintchik
• Leslie P. Langworthy
• Leslie Poolmart
• Leslie Pope
• Leslie Population Model
• Leslie Probyn
• Leslie Procter
• Leslie Pyfer
• Leslie Raisbeck
• Leslie Ramsammy
• Leslie Randall (actor)
• Leslie Rawlins
• Leslie Read
• Leslie Redgrave
• Leslie Rees
• Leslie Reifer