Franciszek Januszewski (November 23, 1886 – June 10, 1953) was a Polish-American social activist and the publisher of Detroit's Dziennik Polski.

Born on November 23, 1886, in Łomża, Januszewski became active in the Polish Socialist Party in 1905 and, fearing arrest, had to immigrate to the United States two years later.

He joined the local "Sokół" club in Cleveland, Ohio, where he finished the Business College.

Januszewski started working for Dziennik Polski in Detroit as an advertising agent.

He served as vice-president and president of the National Committee of Americans of Polish Extraction (KNAPP) until 1946.