Ashcroft Technology Academy, formerly ADT College, is a state secondary school in south-west London, Putney.

Ashcroft Technology Academy is a secondary school for students aged 11–16 (academic years 7–11).

The school also offers further education for students aged 16–18 (academic years 12 and 13) in their Sixth Form.

It is a registered charity under the formal name Prospect Education (Technology) Trust Limited.

[1] ADT College was established in 1991 as a City Technology College, funded by donations from various organisations including ADT Security Services (whose owner at the time was Baron Michael Ashcroft), Unisys, British Gas and Young's (who sponsored the schools "music bunker").