Nik Razboršek (born 4 October 1993) is an inactive Slovenian tennis player.

Razboršek has a career high ATP singles ranking of 409 achieved on 17 December 2018.

He also has a career high ATP doubles ranking of 625 achieved on 17 July 2017.

[1] Razboršek has represented Slovenia at Davis Cup, where he has a win–loss record of 1–2.

[2] He is a left-handed player with a double-handed backhand.