Big cock may refer to:

• Big Cock - an album by the band King Kurt
• A colloquialism for a large human penis, see Human penis size
• A large rooster
• PT 617, also known as Big Red Cock, an American torpedo boat

• Diànzǐ Yóuxì Ruǎnjiàn
• Diácono João Luiz Pozzobon
• Diálogo?
• Diána Detre
• Diána Pulsfort
• Diána Reményi
• Diána Szurominé
• Diána Szurominé Pulsfort
• Diário Catarinense
• Diário de Marília
• Diário de Noite
• Diário do Governo
• Diário Económico
• Diário Insular
• Diário Oficial da União
• Diário Popular
• Diène
• Dière de Dièreville
• Dièreville
• Dièye
• Diébougou Airport
• Diézhōu
• Diên-Biên-Phu
• Diêu Trì
• Diódoro Carrasco