St John's Wood is a district of north London in the City of Westminster, near Regents Park. It is approximately 2.5 miles north-west of Charing Cross. It is home to some of the most expensive properties in the world.

St John's Wood was developed from the early 19th century onwards. It was one of the first London suburbs to be developed with a large amount of low density "villa" housing, as opposed to the terraced housing which was the norm in London up to the 19th century, even in expensive districts. Parts of St John's Wood have been rebuilt at a higher density, but it remains a highly desirable residential district.

St John's Wood is the location of Lord’s Cricket Ground, home of the MCC and original headquarters of the sport. It is also famous for Abbey Road Studios, where The Beatles recorded, notably the Abbey Road album, the cover of which features the band crossing the road. Paul McCartney has owned a property in the area since the 1960s along with many other famous music and film stars.

The King’s Troop, Royal Horse Artillery has a barracks in St. John's Wood and regularly exercises their horses by parading them through the streets of St. John's Wood.

Chef Clarissa Dickson Wright grew up in St John's Wood, and it is now home to supermodel Kate Moss. Actor Damian Lewis was born in St John's Wood. The Rolling Stones referenced it in their song “Play With Fire”.