Johann Albrecht Euler (27 November 1734[1] – 17 September 1800) was a Swiss-Russian astronomer and mathematician.

[citation needed] Katharina married Leonhard Euler on 7 January 1734 and Johann Albert would be the eldest of their 13 children (only 5 of whom survived childhood).

In St. Petersburg, he lived in his father's house; Johann Albrecht's family occupied the ground floor.

In 1771, Euler was elected a foreign member of the Royal Swedish Academy of Sciences.

In 1789, his youngest daughter married James Bernoulli "the younger" (1759–1789) who died two months after the wedding in a drowning accident.