Truthy may refer to:

• Truthiness
• JavaScript syntax#Boolean

• Mannville Formation
• Mannville Group
• Mannvit Engineering
• Mann-Wald theorem
• Mannweiler-Coelln
• Mannweiler-Colln
• Mann White Slave act
• Mann White-Slave Traffic Act
• Mann-Whitney
• Mann-Whitney U
• Manny Armstrong
• Manny Aston
• Manny Azenberg
• Manny Bamba Villar Jr.
• Manny Bañuelos
• Manny being franny
• Manny being Manny
• Manny Burriss
• Manny Castillo
• Manny Come Home
• Manny Curtis
• Manny Delgado
• Manny Diaz
• Manny Diaz (American football)
• Manny Diaz (American Football Coach)