M275 motorway

M275 shield
M275
Map
M275 highlighted in blue
Route information
Maintained by Portsmouth City Council
Length2.0 mi (3.2 km)
Existed1976–present
Major junctions
North endWymering
Major intersections
M27 motorway
South endPortsmouth
Location
CountryUnited Kingdom
Road network
M271 M602

The M275 is a 2-mile-long (3 km), dual three-lane motorway in Hampshire, southern England. It is the principal road route for entering and leaving Portsmouth. It continues as the A3 into Portsmouth, and meets the M27 at its northern terminus. From the motorway, there are scenic views over Portsmouth harbour, and the Sails of the South between the two carriageways.

The M275 is not the responsibility of National Highways. It is managed by Portsmouth City Council from the point where the slip roads to the M27 end. The M275 was not built with a full hard shoulder. For its entire length, a narrow verge is maintained, although there is space available for a full width shoulder. Instead, drivers are warned on entry from the A3 and M27 of the lack of hard shoulder, with signs saying "no hard shoulder for 2 miles".