Marhanets (Ukrainian: Марганець, pronounced [ˈmɑrɦɐnetsʲ]; Russian: Марганец, pronounced [ˈmarɡənʲɪts]; lit. ''manganese'') is a city in Nikopol Raion of Dnipropetrovsk Oblast that was established in 1938 in southern Ukraine. It was established in place of village Horodyshche that contained a manganese mine (mining town) and in 1926-1938 was called Komintern.
The city is located on the right bank of the Kakhovka Reservoir on the Dnieper River where the river meets one of its tributaries Tomakivka. Marhanets hosts the administration of Marhanets urban hromada, one of the hromadas of Ukraine. Its population is approximately 44,980 (2022 est.).