The phrase "water lily" is used to describe aquatic plants of the following families, which have lily pads:
- Nymphaeaceae, /ˌnɪmfiːˈeɪsiː/ is a family of flowering plants
- Nuphar lutea, the yellow water lily
- Nelumbonaceae (Nelumbo), also called "Lotus"
"Water lily" may also be a reference to the following in popular culture:
- Water Lilies, a famous painting series by Claude Monet
- Water Lilies (film) (Naissance des pieuvres), a 2007 film by Céline Sciamma
- Water Lily Acoustics, a record label
- Waterlily (novel), a 1988 ethnographic novel by Ella Cara Deloria
- Lily pads, military slang for Cooperative Security Location
- Lilypad, a futuristic concept for artificial islands or floating cities, envisioned by architect Vincent Callebaut
- LilyPad Arduino
- Waterlillies, a male-female electronica–pop–trip hop duo from the 1990s