Estanislao Arceta Fernandez Jr. (March 28, 1910 – July 28, 1982)[1] was an Associate Justice of the Supreme Court of the Philippines.

He initially lost his re-election bid in 1949 to Juan Baes but his victory was affirmed in 1951 after winning his electoral protest.

He was appointed to the Supreme Court of the Philippines on October 19, 1973, as Associate Justice and served until retirement age.

In the Batasan, he was a member of the following committees: Foreign Affairs, Justice Human Rights and Good Government, Public Highways, Revision of laws, and Codes and Constitutional Amendments.

He is of relation to Danilo Fernandez, who is the grandson of his first cousin and incumbent representative of Santa Rosa, Laguna.