Karl Lärka (born 24 July 1892 at Sollerön in Dalarna, Sweden, died 2 June 1981) was one of the more important 20th-century documentary photographers in Sweden. Lärka's prime concern was to document the peasant culture that he understood was beginning to disappear, the culture of the lands around lake Siljan in Dalarna, one with agriculture, forestry and many people with stories about older times. Most of his photography was done from 1916 to 1934, and he combined it with lecture tours about the countryside of Siljan. He also documented many of the stories elderly people in the villages told him and was very active in the Swedish local heritage movement that started in the 1920s. More than 4,200 of his photographic plates are today in the municipal archive of Mora.