Pedro López Yap (July 1, 1918 – November 20, 2003) was the Chief Justice of the Supreme Court of the Philippines in 1988.

He briefly served for two and a half months from April 19, 1988, to June 30, 1988, the shortest in history until Chief Justice Teresita de Castro surpassed that record.

Yap was born in San Isidro, Leyte, in July 1918 to an ethnic Chinese father and his native Leytena wife.

[2] Yap began his governmental career as a diplomat and served as the United Nations Human Rights Commission secretary.

However, he was able to include an article on socio-economic rights in the proposed draft before martial law was declared and revised to extend Marcos's rule.