Keen rejoined West Ham in July 2002 as under-17 academy coach. He was later appointed reserve team coach and became first-team coach in October 2006. Following the sacking of manager
Alan Pardew in December 2006, he was very briefly placed in temporary charge of first-team affairs until
Alan Curbishley was appointed two days later. He reverted to his previous role as reserve team coach when
Glynn Snodin was appointed as first-team coach in June 2007. He was formally announced as caretaker manager on 3 September 2008 after the resignation of manager Alan Curbishley. Keen took charge of West Ham for one game only; a 3–2 away defeat to
West Bromwich on 13 September 2008 before handing over the manager's role to
Gianfranco Zola. Keen was appointed again as caretaker-manager of West Ham, for their last game of the
2010–11 season, following the sacking of their previous manager, Avram Grant on 15 May 2011. On 3 July 2011, Keen left West Ham to join
Liverpool as first-team coach in the backroom team under
Kenny Dalglish. On 8 June 2012, it was confirmed that Keen had left Liverpool after the arrival of Brendan Rodgers as manager. On 3 July 2012 it was announced Keen had joined West Bromwich Albion as joint assistant head coach. On 14 December 2013 it was announced that Kevin Keen had been sacked along with head coach Steve Clarke. In July 2014, Keen began work as Head of Coaching and Under-18s Manager at
Fulham. On 20 December 2014 he was appointed assistant manager to
Steve Clarke at
Reading. Keen was sacked alongside Clarke on 4 December 2015. After leaving his managerial role at
Colchester United, Keen returned to coaching by joining
Crystal Palace in July 2016. In February 2018, Keen joined
Southend United as an assistant manager to
Chris Powell. In June 2019, Keen returned to West Ham as coach to their under-18 team. ==Managerial career==