Janusz Domaniewski (1891–1954) was a Polish ornithologist.
Notable published works include the following:
1918: Die Stellung des Urocynchramus pylzowi Przev. in der Systematik. J. Ornithol. 66(4): 421-424. doi:10.1007/BF02251733 (first appraisal of the true distinctness of Przewalski's finch)
1924: Beitrag zur Kenntnis der Gattung Thamnophilus Vieillot. Bull. Acad. Polonaise des Sci. et des Lettres: 753-763. (review of the species and subspecies of the genus Thamnophilus)
1925:
Contribution a la connaissance des pics paléarctiques. Ann. Zool. Mus. Polonici Hist. Nat.: 75-84. (taxonomic review of Palaearctic woodpeckers)
Systematik und geographische Verbreitung der Gattung Budytes. Ann. Zool. Mus. Polonici Hist. Nat.: 85-125. (review of the genus Budytes)
