Baker Street is a street in the Marylebone district of the City of Westminster in London. It is named after builder William Baker, who laid the street out in the 18th century. The street is most famous for its connection to the fictional detective Sherlock Holmes, who lived at a fictional 221B Baker Street address. The area was originally high class residential, but now is mainly occupied by commercial premises.
Baker St is a busy thoroughfare, lying in postcode areas NW1/W1 and forming part of the A41 there. It runs south from Regent's Park, the intersection with Park Road, parallel to Gloucester Place, intersecting Marylebone Road, Portman Square and Wigmore Street. At the intersection with Wigmore St, Baker St turns into Orchard Street, which ends when it intersects with Oxford Street. After Portman Square the road continues as Orchard Street. Selfridges, a landmark department store is on the corner of Orchard Street and Oxford Street.
The street is served by the London Underground by Baker Street tube station, one of the world's oldest surviving underground stations. Next door is Transport for London's lost property office.
A significant robbery of a branch of Lloyds Bank took place on Baker Street in 1971.