Sture Helge Vilhelm Pettersson (30 September 1942 – 26 June 1983) was a Swedish cyclist. He was part of the road racing team of four Pettersson brothers, known as Fåglum brothers, who won the world title in 1967–1969 and a silver medal at the 1968 Olympics; three of the brothers were also part of the bronze-winning road team at the 1964 Games. In 1967 they were awarded the Svenska Dagbladet Gold Medal.

Petterson turned professional after the 1969 World Championships, together with the other brothers, but had little success and retired in 1972. He was known for pushing himself to the limits. At a 1964 race in Malmö he fainted 12 km before the finish; his brother Gösta rode nearby and managed to catch him from falling. Sture died aged 40, probably due to a ruptured blood vessel in the brain. His grandson Marcus Fåglum also became a leading road racing cyclist.