Julius Friedlænder was a Danish genre painter.

Friedlænder was born at Copenhagen, Denmark. He was the son of Marcus Friedländer and Rebecca Heymann. He entered the Academy in 1824, afterwards studying under Johan Ludwig Lund (1777–1867).
In 1842, he was awarded a travel scholarship from the Academy. In 1843-44 he visited Paris and Italy, whence he derived additional subjects for his art. Still later he took to depicting military and naval life.
He exhibited at the Charlottenborg Spring Exhibition periodically between 1812-1861. He died in Copenhagen during 1861.