Clinker may refer to:

• Cement clinker, a kilned then quenched cement product
• Clinker (boat building), construction method for wooden boats
• Clinker (waste), waste from industrial processes, particularly coal burning
• Clinkers (album), a 1978 album by saxophonist Steve Lacy
• Clinker brick, rough dark-coloured bricks
• Clinker Peak, a volcanic peak in British Columbia, Canada
• Clinker Ridge, a mountain ridge in British Columbia. Canada
• Gary James Joynes, a.k.a. Clinker
• Mount Price (British Columbia), formerly known as Clinker Mountain

Clinker may also refer to:

• Small rocks that form in some ʻAʻā lava flows
• Waste from coal-seam fires

• Cletus Clinker (1911–1979), American football player and coach
• Humphry Clinker, title character of Tobias Smollett's 1771 novel The Expedition of Humphry Clinker