Nils Olov Lennart ”Lill-Järven" Larsson (7 February 1930 – 26 March 2021) was a Swedish cross-country skier and coach. He competed in the 4 × 10 km relay at the 1956 and 1960 Olympics and won a bronze medal in 1956, finishing fourth in 1960; in 1960 he also placed fourth and fifth in the individual 30 and 50 km events. Larsson won the 4 × 10 km relay at the 1958 FIS Nordic World Ski Championships in Lahti.