Pile may refer to:

• Pile foundation, type of deep foundation
• Pile (textile), fabric with raised surface made of upright loops or strands of yarn
• Carpet pile
• Nuclear pile, early term for a nuclear reactor, typically one constructed of graphite
• Pile, an ordinary in hearaldry, a downward-pointing triangle
• Voltaic pile, first modern electric battery
• General Sir Frederick Alfred Pile, 2nd Baronet
• Pile (data structure)

Piles can refer to:

• a common name for hemorrhoids
• Piles, Valencia, municipality in Spain