Koninklijke Sportvereniging Waregem was a Belgian football club that existed between 1925 and 2001.

One year later, the club merged with Red Star Waregem to become S.V.

The new team became a member of the national association on the same year and was assigned the matricule number 4451.

In 1951 the club received the right to be called royal (Dutch: Koninklijk) which was at the time given to any team founded 25 years before.

In 2001, due to financial problems, the club had to merge with Zultse V.V.