Sin Nombre

Sin nombre may refer to:

• "Sin nombre" (Spanish: "without name") may signify a nameless character, or the Spanish equivalent of English language term "John Doe"
• Virus sin Nombre, the prototypical etiologic agent of hantavirus cardiopulmonary syndrome (HCPS)
• Sin Nombre (2009 film), a 2009 film by Cary Joji Fukunaga
• The Nameless (film), 1999 film also known in Spanish: original title as "Los Sin Nombre"