Henk Duut (born 14 January 1964 in Rotterdam) is a retired Dutch footballer who was active as a defender. Currently he is active as an assistant coach for Morocco u23
Duut started his football career at amateur side Transvalia ZW in his hometown Rotterdam before being scouted by Feyenoord Rotterdam. At Feyenoord Rotterdam he made his professional debut on 13 March 1982 when Feyenoord Rotterdam won 1-2 in Eindhoven against PSV. For six seasons Duut was part of the Feyenoord Rotterdam squad and during the 1983-84 season he and his team mates won the double (Eredivisie and KNVB Cup). In December 1986 Feyenoord Rotterdam sent Duut on loan to Fortuna Sittard where he finished the season. After that season Fortuna Sittard decided to sign Duut and he played another five years for the club based in Limburg.
On 29 April 1992 Duut was said to retire from professional football due to a cerebral hemorrhage. Earlier that year, on 7 February he played his last match with Fortuna Sittard against MVV Maastricht. Duut stayed at Fortuna Sittard and since the start of the following season (1992–93) he became a youth coach at the club, which he stayed until 1996 to become Bert van Marwijk's assistant. Bert van Marwijk left Fortuna Sittard in 2000 to become the manager at Feyenoord Rotterdam and Duut took over as a manager. However after 13 matches without any win he was taken out of his position. Again he became a youth coach at the club, until February 2002. In that month he joined Japanese based Omiya Ardija to become their manager for a season. He then became Pim Verbeek's assistant manager at the Netherlands Antilles national football team. In June 2004 he re-joined Feyenoord Rotterdamwhen newly appointed manager Ruud Gullit asked him to become his assistant at the club. After Ruud Gullit left Duut remained in his position when his replacement Erwin Koeman arrived. On 11 December 2007 Duut was announced as an assistant coach for the Australian National Team, the Socceroos. He will once again work under newly appointed head coach, Pim Verbeek.
On 8 April 2010, Henk Duut followed Pim Verbeek to Morocco. He is the assistant coach of the Olympic Squad of Morocco. The team qualified for the Olympic Games in London 2012.