| Honorific-Prefix: | The Honorable |
| Estanislao A. Fernandez | |
| Office: | Regional Assemblyman from Region IV-A |
| Term Start: | June 12, 1978 |
| Term End: | July 28, 1982 |
| Office2: | 88th Associate Justice of the Supreme Court of the Philippines |
| Nominator2: | Ferdinand Marcos |
| Predecessor2: | J. B. L. Reyes |
| Successor2: | Ruperto Martin |
| Term Start2: | October 19, 1973 |
| Term End2: | March 28, 1975 |
| Office3: | Senate Minority Leader |
| President3: | Diosdado Macapagal |
| Term Start3: | January 22, 1962 |
| Term End3: | December 30, 1965 |
| Predecessor3: | Ferdinand Marcos |
| Successor3: | Ambrosio Padilla |
| Office4: | Senator of the Philippines |
| Term Start4: | December 30, 1959 |
| Term End4: | December 30, 1965 |
| Office5: | Member of the Philippine House of Representatives from Laguna's 2nd district |
| Term Start5: | December 27, 1951 |
| Term End5: | December 30, 1953 |
| Predecessor5: | Juan Baes |
| Successor5: | Wenceslao Lagumbay |
| Term Start6: | July 9, 1945 |
| Term End6: | December 30, 1949 |
| Predecessor6: | Crisanto Guysayko |
| Successor6: | Juan Baes |
| Birth Date: | 28 March 1910 |
| Birth Place: | Liliw, Laguna, Philippine Islands |
| Death Place: | Marikina, Philippines |
| Nationality: | Filipino |
| Party: | Kilusang Bagong Lipunan (1978–1982) |
| Otherparty: | Liberal (1946–1973) Nacionalista (until 1946) |
| Spouse: | Soledad Camello |
| Alma Mater: | University of the Philippines Diliman (LL.B) |
| Signature: | Estanislao_Fernandez_signature1.jpg |
| Occupation: | Lawyer |
Estanislao Arceta Fernandez Jr. (March 28, 1910 - July 28, 1982)[1] was an Associate Justice of the Supreme Court of the Philippines. In college, he distinguished himself as a debater and orator. In the practice of law, he earned wide reputation for championing "lost cases", including a criminal case in Supreme Court of the United States.[2]
Fernandez was born in Liliw, Laguna to Estanislao Fernández Sr. and Silveria Arceta. He studied law at the University of the Philippines College of Law and graduated in 1933, where he was a member of the Upsilon Sigma Phi fraternity. He passed the bar examinations in 1935.
In the 1946, Fernandez ran for representative of the Laguna's 2nd district under the banner of the Liberal Party and won. He initially lost his re-election bid in 1949 to Juan Baes but his victory was affirmed in 1951 after winning his electoral protest.[3] He ran for senator in 1957 but lost. He was elected senator in 1959. 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 was elected Regional Mambabatas Pambansa from Region IV-A in 1978 under the Banner of Kilusang Bagong Lipunan.
Fernandez was married to Soledad Camello-Fernandez. He is of relation to Danilo Fernandez, who is the grandson of his first cousin and incumbent representative of Santa Rosa, Laguna.[4]
Fernandez is buried at Loyola Memorial Park in Marikina.