Mardy can refer to:As a place name
- Mardy, Monmouthshire, Wales
- Mardy, Shropshire, EnglandPeople
- Mardy Collins, American professional basketball player
- Mardy Fish, American professional tennis playerAs a word
- Mardy is a word in some dialects of English meaning: awkward; un-co-operative; bad tempered; whiney; aloof; stroppy, sulking like a small child. Its usage tends to be more common around, but not exclusive to Nottingham, Derby & Leicester (the East Midlands) and Sheffield . It is often used in phrases such as mardy bum, mardy cow, mardy bugger etc..In music
- Mardy bum is a song by UK indie band The Arctic Monkeys, from their debut album Whatever People Say I Am, That's What I'm Not