4L

4L or 4-L can refer to:


 * 4L, another name for Renault 4
 * 4L is the fourth and final year of a law student in Tanzania, Kenya and Uganda.
 * 4L Trophy
 * Curtiss R-4L, model of Curtiss Model R
 * ORC4L
 * Proje 4L, see Proje4L / Elgiz Museum of Contemporary Art
 * British Rail Class 202 Diesel-electric multiple units (6L) when reduced to a four-carriage configuration.
 * 4L (band), South Korean girl group
 * 4L, the production code for the 1976 Doctor Who serial The Seeds of Doom
 * Loyal Legion of Loggers and Lumbermen, an American company union founded in 1917
 * 4L, a 2021 mixtape by American rapper Yeat
 * 4L (film), 2019 Spanish film