Knaphill is a village in Surrey, England, between Woking to the east and Farnborough to the west; to the south and north on the A322 – its western border – are Brookwood, and Bisley. Some of the village is on a hill, hence its name.

The village name was first recorded in 1225 as La Cnappe. Since then there have been various spellings of the name including Nap Hill, Naphill and Knap Hill.

In 958 A.D., the village was probably part of land granted to Westminster Abbey; there is clear ownership by 1278. The land passed to Henry VIII on the dissolution of the monasteries in the 1530s.

The Basingstoke Canal was built to the south of Knaphill in 1794 and the railway line came in 1838. In 1859, a prison was built in Knaphill. This was later converted into army barracks.

Knaphill has three schools: Knaphill Lower School, Knaphill Junior School and St John's Primary School.

Theatre company Peer Productions is based at the Woking Youth Arts Centre in Knaphill, providing drama training and workshops for students of all ages. WYAC was previously known as Trinity Studios, and is famous as being the birthplace of the Spice Girls and the boy band 5ive

Local pubs include The Garibaldi, The Nags Head, The Royal Oak, which dates back to the 17th century, The Anchor, formerly a hotel and now closed, and Crown Inn, on the high street. The village has a residents' association. The nearest railway stations are at Brookwood and at Woking.

Knaphill has a Non-League football club, Knaphill F.C., who play at Redding Way, the Brookwood Country Park football ground and are members of the Combined Counties Football League.