Satu Karoliina Lundahl, née Leppäluoto (born 30 June 1968 in Helsinki) is a retired female weightlifter from Finland, who was nicknamed "Kartsi" during her career.

She started as a shot putter, competing for her native country at the 1996 Summer Olympics.

She also competed in this discipline at the 2000 Summer Olympics in Sydney, Australia.

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