'''Ketelaar''' or '''Ketelaars''' is a Dutch surname. Notable people with the surname include:
*Digna Ketelaar (born 1967), Dutch tennis player *Hanneke Ketelaars (born 1974), Dutch tennis player *James Edward Ketelaar (born 1957), American scholar and historian *Jan Ketelaar (1908–2001), Dutch chemist and author *Leo Ketelaars (1913–1992), Dutch violinist, operatic baritone, opera manager and academic voice teacher *Sander van Doorn (real name Sander Ketelaars; born 1979), Dutch DJ and record producer
==See also== * De Ketelaere
{{surname}} Category:Dutch-language surnames