Javier Laynez Potisek (born June 2, 1959) is a Mexican jurist and since December 10, 2015, a member of the Supreme Court of Justice of the Nation (SCJN) of Mexico.

[3] He has been a professor of Administrative Law, Law and Regulation, and Legal Structure of the Mexican State, at the undergraduate and master's level, at El Colegio de México and at the Centro de Investigación y Docencia Económicas (CIDE).

In the legislative part, it emphasizes, fundamentally, the energy reform as well as the decisive participation in the reform of the Public Administration, that proposed President Felipe Calderón Hinojosa, compacting the administrative structures.

Under his administration, favorable sentences were obtained in the ISSSTE Law, having more than 100,000 amparos gained.

In the case of criminal investigations, the number of arrest warrants for crimes committed against the treasury within the scope of the powers of the Office of the Attorney General has increased, while it has been responsible for litigating financial criminal matters arising from the crisis 2008.