Last name Ступак (Stupak 
, Ступак 
) , around the globe, is a common surname. The cognomen Ступак is habitual in Eastern Europe, particularly Ukraine, where it is quite a common surname, Slovakia, where it is quite a rare surname, and Russia. In absolute terms, it is commonest in Ukraine, Russia, and the United States. Very seldom, Ступак is the forename as well as the last name.
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| Stupak | Canada, Slovakia, Poland, United States, Russia |
| Ступак | Ukraine, Kazakhstan, Belarus, Russia, Kyrgyzstan |
| семен ступак Russian Righteous Among the Nations, RU (b. 1888) |
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| феодосия ступак Russian Righteous Among the Nations, RU (b. 1888) |
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| ступак юрій петрович painter (1911-1979), UA (b. 1911) |
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ступак володимир федорович politician, UA (b. 1961) |
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| ступак, неонила захаровна UA (b. 1915) |
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| ступак, григорий лаврентьевич UA (b. 1922) |
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ступак, никита петрович Russian cross-country skier, RU (b. 1987) |
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| ступак микола лаврентійович UA (b. 1930) |
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кірыл сяргеевіч ступак Belarusian chess player, BY (b. 1990) |
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юлия сергеевна ступак Russian cross-country skier, RU (b. 1995) |
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| ступак іван іванович politician, UA (b. 1960) |
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| ступак іван станіславович Ukrainian military personnel (1977-2015), UA (b. 1977) |
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| ступак юліан юрійович Ukrainian military personnel, UA |
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Ян, Віта, Віра, Леся, Лера, Лиза, Ліна, Люба, Люся, Лєна, Жорж, Олег, Илья, Инна, Иван, Егор, Саша, Таня, Роза, Рима, Уриы, Яків, Вера, Яков, Ніла, Ніка, Аня, Ада, Ася, Зоя, Лев, Лія, Яна, Іра, Єва, Катя, Майя, Алла, Анна, Адам, Гліб, Петр, Дар'Я, Дима, Діна, Неля, Нина, Ніна, and Ілля