Olle Laessker (2 April 1922 – 19 September 1992) was a Swedish track and field athlete who competed in long jump and sprinting events. He had his best achievements at the 1946 European Athletics Championships in Oslo, where he won the long jump by a margin of two centimetres, then teamed up with , and Stig Håkansson to win a second gold for Sweden in the 4 × 100 metres relay. He was Sweden's first European medallist in the long jump.