Heino Eelsalu (8 May 1930 – 26 July 1998) was an Estonian astronomer and science historian.^[1]

Eelsalu was born in Tallinn in 1930. In 1954 he graduated from Tartu State University in mathematics. After graduating he worked at the Tartu Observatory.^[1]

His main fields of research were the structure of Galaxy, and stellar photometry.^[1]

He was a member of many international and local organisations, eg International Astronomical Union and Estonian Naturalists' Society.^[1]

• Astronoomia areng Eesti kultuuriloolise probleemina. // Teaduse ajaloo lehekülgi Eestist II (1976).
• Theoretical foundations of stellar statistics. Tallinn 1982.
• Johann Heinrich Mädler (1794–1874): Eine dokumentarische Biographie (with Dieter B. Herrmann). Berlin 1985.
• Ajastult ajastule. Tallinn 1985.
• Theory of basic galactic statistical research systems. Tallinn 1990.
• Rara astronomica in Estonia I-X (one of the authors). Tallinn 1977-1990.
• Astronoomialeksikon. Tallinn 1996.