Mykolaivka
- List of Ukrainian toponyms that were changed as part of decommunization in 2016
- Mykolaiv (disambiguation)
- Mykolaivka, Beryslav Raion, Kherson Oblast
- Mykolaivka, Donetsk Oblast
- Mykolaivka, Donetsk Raion, Donetsk Oblast
- Mykolaivka, Luhansk Oblast
- Mykolaivka, Mykolaiv Oblast
- Mykolaivka, Mykolaivka settlement hromada, Berezivka Raion, Odesa Oblast
- Mykolaivka, Novohrodivka urban hromada, Pokrovsk Raion, Donetsk Oblast
- Mykolaivka, Obukhivka settlement hromada, Dnipro Raion, Dnipropetrovsk Oblast
- Mykolaivka, Odesa Oblast
- Mykolaivka, Simferopol Raion
- Mykolaivka, Soledar urban hromada, Bakhmut Raion, Donetsk Oblast
- Mykolaivka, Sumy Raion, Sumy Oblast
- Mykolaivka, Svitlodarsk urban hromada, Bakhmut Raion, Donetsk Oblast
- Novovorontsovka
- Ukraine