Shagin (Russian: Ша́гин) is a Russian surname. Notable people with the surname include:

• Alex Shagin (born 1947), Soviet and Russian coin designer
• Anton Shagin (Russian: Антон Александрович Шагин; born 1984), Russian actor
• Dmitry Shagin (Russian: Дмитрий Владимирович Шагин)^[1]
• Ivan Shagin (Russian: Иван Михайлович Шагин)^[2]
• Vladimir Shagin (Russian: Владимир Николаевич Шагин)^[3]
• Shagin Law Group, a law firm in Harrisburg, Pennsylvania, founded in 1996 as Shagin and Anstine by Craig Shagin