Pornpetch Wichitcholchai (Thai: พรเพชร วิชิตชลชัย, RTGS: Phonphet Wichitchonlachai; born 1 August 1948) is a Thai lawyer who has served as the President of the Senate of Thailand from May 2019 to July 2024.

He studied law at Chulalongkorn University, obtaining a bachelor's degree, and undertook postgraduate studies at the Harvard Law School, obtaining a master's degree.

[1] He began work in government service for the first time in the legal position for Council of State.

While serving as President of the National Legislative Assembly, he was invited by the Inter-Parliamentary Union (IPU) to attend the World Conference of Speakers of Parliaments and gave a speech at the United Nations.

[2] On 1 December 2016, Pornpetch, as the President of the National Legislative Assembly invited Crown Prince Vajiralongkorn to ascend to the throne as King after the death of Bhumibol Adulyadej.