Wietse Cornelis van Alten (born 24 September 1978) is a retired archer from the Netherlands.

In the 2000 Summer Olympics in Sydney, van Alten lost to Simon Fairweather of Australia in the semifinals, but rebounded with the highest score of the tournament for a 12-arrow match by scoring 114 in the bronze medal match to defeat Magnus Petersson of Sweden and win the bronze medal.

Van Alten competed at the 2004 Summer Olympics in men's individual archery, trying to defend his bronze medal.

He won his first match 152–151 against Ricardo Merlos of El Salvador, advancing to the round of 32.

After failing to qualify for the Beijing olympics in 2008, Van Alten retired.