Romuald Kazimierz Minkiewicz (27 January 1878 – 25 August 1944) was a Polish biologist, zoologist and botanist as well a writer, poet and social activist.
In 1900, he received his graduation diploma and moved to Kazan University, where for four years he was an assistant at the Department of Zoology and Comparative Anatomy.
From 1905 he worked again at the Villefranche sur Mer station for a year and then decided to remain in exile.
He was a co-founder of the Polish Association of Freethinkers in 1920 and in 1921 he established a non-denominational commune in Warsaw and was its chairman for a short time.
He died as a result of a gunshot to the knee during the Warsaw Uprising and was buried at the Czerniakowski Cemetery.