He started his career by being elected as a member of provincial assembly on a ticket from Pakistan Muslim League-N. Later he was elected a member of National Assembly on a ticket of Pakistan Muslim League (Q) from NA-94 (Toba Tek Singh).
[4] Fatyana in 2013 quit the Pakistan Muslim League (Q)[5][6] due to conflict with Chaudhry Prevez Elahi and other party leaders.
[10] Riaz Fatyana was nominated as a candidate of PTI from NA-113 (Toba Tek Singh-III) and he contested against PML-N's rival Asad Ur Rehman and won the seat.
[11] He served as the member of NACTA and Convener Taskforce On Sustainable Development Goals Pakistan, Chairman National Assembly Standing Committee on Law & Justice Pakistan, Member Public Accounts Committee/ Convener Sub Committee.
[12] He was re-elected to the National Assembly in the 2024 Pakistani general election from NA-107 Toba Tek Singh-III as an independent candidate supported by PTI.