Siankievič
Siankievič (Belarusian: Сянкевіч) is a gender-neutral Belarusian-language surname. It is derived from the given name Sieńka (Belarusian: Сенька), a diminutive of Siamion (Simeon) (Belarusian: Сямён).
Other forms: Polish: Sienkiewicz; Russian: Senkevich (transliteration from Cyrillic alphabet).
Notable people with the surname include:
- Aliaksandr Siankievič, Belarusian statesman
 - Vasiĺ Siankievič, Belarusian linguist
 - Viktar Siankievič, Belarusian historian
 - Viktoryja Siankievič, Belarusian journalist and TV presenter
 - Jan Siankievič (b. 1995), Belarusian footballer