Longwick is a village 1+1⁄4 miles (2 km) northwest of Princes Risborough, Buckinghamshire, England, on the A4129 road.

[citation needed] With Ilmer, Owlswick, Meadle and Horsenden, it forms the civil parish of Longwick-cum-Ilmer which was created in 1934.

Longwick was the location for the Sunrise/Back to the Future Acid House party on 12 August 1989.

Longwick is also served by Redline Buses' 320 rail link service between Princes Risborough and Chinnor at peak times.

For a map see the Wycombe District site describing the Parish of Longwick-cum-Ilmer This Buckinghamshire location article is a stub.