Len

Len or LEN is a common first name, and also may refer to:

len

Len (programming), a function that gives the length of a text string in some dialects of BASIC programming language
len, ISO 639 code for Lencan languages

Len (band), a Canadian indie rock group
Len (Norway), an important Norwegian administrative entity during 1536–1814, the period of Dano-Norwegian unification after their amalgamation as one state
River Len, a river in the English county of Kent
Lén, a character from Irish mythology
Mr. Len, American hip hop DJ
Len Dugan (1910–1967), American football player
Len Levy (1921–1999), American football player and professional wrestler
Alex Len (born 1993), Ukrainian basketball player

Len (Tsukihime), a fictional character from the visual novel Tsukihime by TYPE-MOON
Len, the feature character from the manga Video Girl Len
Len Kagamine (鏡音レン), a Vocaloid from Vocaloid 2
Len, a character from the Kamen Rider Dragon Knight series