Claes
Claes is a masculine given name, a version of Nicholas, as well as a patronymic surname. It is also spelled Klas, Clas and Klaes.
Given name
Claes is a common first name in Sweden. It was also a common name in the Low countries until the 18th century, after which the spelling Klaas was largely adopted. People with the given name Claes include:
Claes Adelsköld (1824–1907), Swedish engineer, military officer and politician
Claes Andersson (b. 1937), Finnish psychiatrist and politician
Claes van Beresteyn (1627–1684), Dutch landscape painter
Claes Berglund (b.~1960), Swedish ski-orienteering competitor
Claes Björklund (b. 1971), Swedish musician, producer and songwriter
Claes Michielsz Bontenbal (1575–1623), Dutch civil servant involved in a conspiracy against Maurice of Orange
Claes Borgström (b. 1944), Swedish lawyer and politician
Claes Compaen (1587–1660), Dutch privateer, pirate, and merchant
Claes Cronqvist (b. 1944), Swedish footballer
Claes Cronstedt, Swedish lawyer
Claes Dahlbäck (b. 1948), Swedish businessman