Sin nombre (English: "Nameless") is a 2009 adventure thriller film written and directed by Cary Joji Fukunaga, about a Honduran girl trying to immigrate to the United States, and a boy caught up in the violence of gang life.

Sin nombre won awards for directing and cinematography at the 2009 Sundance Film Festival.

Willy, nicknamed El Casper, is a member of the Mara Salvatrucha gang and lives in Tapachula, a Mexican town near the border with Guatemala.

Among the immigrants is a Honduran family introduced earlier, consisting of the teenage girl Sayra, her father, and her uncle, who are on their way to relatives in New Jersey.

Casper's knowledge from previously smuggling gang members and avoiding the police proves useful, as he eludes his pursuers.

Casper pays the man with his camera containing the cherished pictures of his girlfriend and insists that Sayra go first.

The others arrive and proceed to empty their magazines into Casper, while Sayra struggles to hold onto the raft and screams.

The closing scenes show Sayra phoning her father's new family from outside an American mall, her uncle setting off on another attempt to cross the border, and Smiley having his lip tattooed as a sign of his loyalty to the gang.