Wiktor is a masculine given name, the Polish version of Victor. It may refer to:
- Wiktor Andersson (1887–1966), Swedish film actor
- Wiktor Balcarek (1915–1998), Polish chess player
- Wiktor Biegański (1892–1974), Polish actor, film director and screenwriter
- Wiktor Brillant (1877–1942), Polish pharmacist
- Wiktor Budzyński (1888–1976), ethnic Polish politician in the Republic of Lithuania
- Wiktor Chabel (born 1985), Polish rower
- Wiktor Długosz (born 2000), Polish footballer
- Wiktor Eckhaus (1930–2000), Polish–Dutch mathematician
- Wiktor Jassem (1922–2016), Polish phonetician, philologist and linguist
- Wiktor Gilewicz (1907–1948), Polish officer
- Wiktor Godlewski (1831–1900), Polish nobleman, explorer and naturalist
- Wiktor Grodecki (born 1960), Polish film director, screenwriter and producer
- Wiktor Grotowicz (1919–1985), Polish actor
- Wiktor Kemula (1902–1985), Polish chemist
- Wiktor Komorowski (1887–1952), Polish fighter ace in the Imperial Russian Air Force during World War I
- Wiktor Litwiński, Polish President of Warsaw from 1906 to 1909
- Wiktor Malinowski (born 1994), Polish professional poker player
- Wiktor Andrzej Moszczyński (born 1946), British-Polish journalist, political activist and author
- Wiktor Olecki (1909–1981), Polish cyclist
- Wiktor Ormicki (1898–1941), Polish geographer and cartographer
- Wiktor Poliszczuk (1925–2008), Polish-Ukrainian-Canadian politologist
- Wiktor Zygmunt Przedpełski (1891–1941), Polish socialist and activist
- Wiktor Sadowski (born 1956), Polish artist
- Wiktor Suwara (born 1996), Polish sprinter
- Wiktor Szelągowski (1900–1935), Polish rower
- Wiktor Thommée (1881–1962), Polish Army brigadier general
- Wiktor Tołkin (1922–2013), Polish sculptor and architect
- Wiktor Unander (1872–1967), Swedish officer and diplomat
- Wiktor Weintraub (1908–1988), Polish historian
- Wiktor Wiechaczek (1879–1941), Polish soldier
- Wiktor Wysoczański (born 1939), Polish Old Catholic bishop
- Wiktor Zieliński (born 2001), Polish professional pool player
- Wiktor Żwikiewicz (born 1950), Polish science fiction writer
- Wiktor Zysman, birth name of Bruno Jasieński (1901–1938), Polish poet, novelist and playwright