Björnstjerna
Björnstjerna is a family name that may refer to :
- Carl Björnstjerna (1886–1982), Swedish show jumper
- Magnus Björnstjerna (1779–1847), Swedish general and writer. Son of Magnus Olof Björnstjerna (1741–1785).
- Magnus Olof Björnstjerna (1741–1785), Legation Secretary in Electoral Saxony from 1765 to 1778, then Ambassador Extraordinary to the Reichstag in Regensburg. Died there and buried in the envoys cemetery .