Southampton Test is a United Kingdom parliamentary constituency, currently represented by the Labour Party Member of Parliament Alan Whitehead MP (b.1950). The seat covers the western part of the City of Southampton, in southern England. It is named after the River Test, one of the city's two rivers.

The constituency covers the leafy northern suburbs and the western port areas as well as the council housing estates of the western fringes. It is seen as the marginally more affluent of the two constituencies in the city (the other is Southampton Itchen - named after the other major river).

Wards and Boundaries

Southampton Itchen covers the city wards of (with their associated neighbourhoods):

• • Bassett (Bassett, Bassett Green, Lordswood)
  • Bevois (Northam, part of St. Marys)
  • Coxford (Lord's Hill, Aldermoor)
  • Freemantle (Freemantle, part of Shirley)
  • Millbrook (Millbrook)
  • Portswood (Portswood, Highfield (including the University), St. Denys)
  • Redbridge (Redbridge, Maybush)
  • Shirley (part of Shirley, Upper Shirley)
  • Swaythling (Swaythling)

The constituency is bounded to the east by Southampton Itchen (Labour), to the north by Romsey (Liberal Democrat) and in to the west by New Forest East (Conservative).