J18

J18 may refer to:

Vehicles

Locomotives

• GSR Class J18, an Irish steam locomotive
• LNER Class J18, a British steam locomotive class

Ships

• HMS Selkirk (J18), a Hunt-class minesweeper of the Royal Navy
• HSwMS Halland (J18), a Halland-class destroyer of the Swedish Navy
• INS Sandhayak (J18), a Sandhayak-class survey ship of the Indian Navy

Other uses

• Carnival Against Capital, an anti-globalisation protest held on June 18, 1999
• County Route J18 (California)
• Elongated triangular cupola, a Johnson solid (J₁₈)
• J18 Elit, the highest level of under-18 ice hockey in Sweden
• Pneumonia

See also

• 18-j, 2004 film