Tage Fritjof Erlander (; 13 June 1901 – 21 June 1985) was a Swedish politician who served as Prime Minister of Sweden from 1946 to 1969. He was the leader of the Swedish Social Democratic Party and led the government for an uninterrupted tenure of 23 years, one of the longest in any democracy. This led to Erlander being known as "Sweden's longest Prime Minister" referring to both his physical stature – 192 cm, or 6 feet and 3.5 inches – and tenure (the Swedish word "lång" meaning both "long" and "tall").