Mazin (Russian: Мазин) is a Slavic masculine surname, its feminine counterpart is Mazina. It may refer to
- Alexander Mazin (born 1959), Russian writer, poet and songwriter
- Craig Mazin (born 1971), American screenwriter and film director
- Maria Mazina (born 1964), Russian Olympic champion épée fencer
- Viktor Mazin (1954–2022), Kazakh weightlifter