Koets means coach (a four-wheeled carriage) in Dutch. It is a Dutch surname that may refer to
Adam Koets (born 1984), American football offensive tackle Arent Jacobsz Koets (c.1600–1635), Dutch concierge Arne Koets, Dutch historical European martial arts practitioner Roelof Koets (1592–1654), Dutch painter Roelof Koets (Zwolle) (1655–1725), Dutch painter
See also Kuts Kutz Couts