|Headteacher||Mr Steve Elliot|
|Chair of governors||Mr. Bill Mandeville|
|DfE URN||139961 Tables|
|Ofsted||Reports Pre-academy reports|
|Students||1482 (September 2009)|
|Colours||Black & Red|
|Former name||Wellingborough Grammar School|
'Wrenn Academy' is a coeducational secondary school and sixth form with academy status, located in Wellingborough, Northamptonshire, England. It was established in 1975, and occupies the campus of the former Wellingborough Grammar School, founded in 1930, at which British television personality David Frost was a pupil.
Wrenn Academy is a split-site school, with the two parts of its campus being a short walk apart. One part of the school is sited on the A5193 (former A509) in the south of the town, just west of the hospital (Coordinates: ). The other main site is situated on Doddington Road ( a few minutes from the London Road site. The Doddington Road site, which was formerly the boy's grammar school, houses years 9-11 along with the Art and Design Technology buildings, and in London Road the site of the former girl's grammar school is attended by years 7-8 and the school's sixth form. The school has a wide range of buildings ranging from 4 to 100 years old. ), The oldest buildings are those of the former grammar school, while the most modern addition being the music block, constructed in 2006.
Notable former pupils
- Ashleigh Butler, Entertainer and Britain's Got Talent 2012 winner along with Pudsey the Dog
- Matthew May - Labour Party Candidate for South Northamptonshire 2010
Wellingborough Grammar School
- Gerry Bermingham, Labour MP from 1983-2001 for St Helens South
- Richard Bradshaw, Director from 1998-2007 of the Canadian Opera Company
- Gordon Cook, tropical disease expert, medical historian, and President of the Royal Society of Tropical Medicine and Hygiene from 1993-5
- Michael Cox (novelist)
- Sir David Frost OBE
- Sir Bruce Liddington 
- John Reid OBE, architect
- Kenneth Spencer
- Giovanni Di Stefano - infamous fraudster
- Sir Terence Streeton KBE CMG, High Commissioner to Bangladesh from 1983-9
- David Thacker, theatre director
- Steve Tompkins, architect
- Ernest Watkin, Professor of Mathematics from 1904-31 at the University of Southampton
- Don White (footballer), rugby player and English national coach from 1969-71
- Jeff Butterfield - England and Northampton rugby player
- Bob Taylor - England rugby player
- Robert Shaw (poet) - active in the fields of literature and jazz, was Second English Master 1960 - 1964.
- John Hyde - England and Northampton rugby player
- Tall, David, and Graham Tall (2006). Memories of Wellingborough Grammar School, with a foreword by Sir David Frost. Retrieved 12 June 2010.
- School website
- Ofsted report 2009. Retrieved 12 June 2010.
- https://www.theguardian.com/education/2011/nov/07/bruce-liddington-eact-academies-salary Bruce Liddington
- http://www.telegraph.co.uk/news/obituaries/1497019/Kenneth-Spencer.html Kenneth Spencer
- Tall, T. and Tall, G. (2006). Memories of Wellingborough Grammar School 1930 - 1975 Clock Tower Publications ISBN 0-9548689-1-9 page 125