János Nehadoma (born 20 August 1901, date of death unknown) was a Hungarian soccer center forward.
He began his career in the Italian Serie B before moving to the American Soccer League where he shared the 1928–29 scoring title.
He began his senior career with Húsiparosok SC, a Hungarian second division club composed of workers from Budapest's meat packing industry.
He spent only two seasons with the club before leaving Europe for the United States, as foreigners were no longer allowed to play football in Italy.
Nehadoma arrived in the U.S., signing with the Brooklyn Wanderers at the end of the 1927–28 American Soccer League season.