(November 7, 1849 - April 6, 1914) was a Polish painter.
Chełmoski was born in the village of Boczki near Łowicz in central Congress Poland, Russian Empire. His first drawing teacher was his father (a small leaseholder and administrator of Boczki village). After finishing high school in Warsaw, he studied in Warsaw Drawing Class (1867-1871) and took private lessons from Wojciech Gerson. From 1871 to 1874 Chełmoski lived in Munich. He worked with Polish painters assembled around Jozef Brandt and Maksymilian Gierymski. He also had studied for a few months at the academy of H. Anschutz and A. Strahuber. In 1872 and 1874 Chełmoski visited the Polish territories. Tatra Mountains and Ukraine.
His first paintings were done under the influence of Gerson. The works that followed were landscapes and villages. In 1875 Chełmoski went to Paris, where he had many important exhibitions and became known to the art scene. With many orders, the artistic level of his paintings decreased.
From 1878 to 1887 Chełmoski visited Poland, Vienna and Venice. In 1887 he returned to Poland and in 1889 settled in Kuklewka Zarzeczna village. Contact with his homeland and nature revealed quality in his artworks. From that time are the best liked Chełmoski's paintings such as Partridge on the Snow, The Storks or Before Thunderstorm.