Einar Billing born 6 October 1871 in Lund, died 17 December 1939 in Västerås, was a Swedish hymnwriter and theologian. Bishop of Västerås 1920-1939. Son of bishop Gottfrid Billing.
After studies at Uppsala University Bachelor of Arts in 1891, Bachelor of Divinity in 1898, Doctor of Divinity 1911 and docent of moral theology and dogmatics in 1900. Served as assistant professor of moral theology and dogmatics from 1901 and professor of moral theology and dogmatics from 1909 at Uppsala University. Ordained as priest in the Church of Sweden in 1900. Served as regimental pastor in Uppsala 1901-1908, vicar of the parishes in Hagby and Ramsta near Uppsala 1908 and vicar of the parish Heliga Trefaldighet (Holy Trinity) of Uppsala in 1909. Elected as bishop of the Diocese of Västerås in 1920, an office he held until his death in 1939.