| Jan Kanty Steczkowski | |
| Office: | 3rd Prime Minister the Regency Kingdom of Poland |
| Deputy: | Stanisław Dzierzbicki Bohdan Broniewski |
| Term Start: | 4 April 1918 |
| Term End: | 2 October 1918 |
| Predecessor: | Antoni Ponikowski |
| Successor: | Józef Świeżyński |
| Birth Date: | 16 October 1862 |
| Birth Place: | Dąbrowa Tarnowska |
| Death Date: | 3 September 1929 (aged 66) |
| Death Place: | Kraków |
| Party: | Stronnictwo Prawicy Narodowej |
Jan Kanty Steczkowski (pronounced as /pl/; 16 October 1862, Dąbrowa Tarnowska – 3 September 1929, Kraków) was a Polish economist, solicitor and politician.
Steczkowski served as Minister of Finance of Poland in the government of Jan Kucharzewski. On 4 April 1918, the Regency Council set up a government in which he became the Prime Minister. His government only lasted until 23 October.
Steczkowski returned to politics in the government of Wincenty Witos (1920–1921), once again leading the Ministry of Finance.[1] Later he was the director of the Bank Gospodarstwa Krajowego (replaced in 1927).