Lorenzo Martinez "Ka Tanny" Tañada Sr. CCLH (Tagalog: [tɐˈɲada], August 10, 1898 – May 28, 1992) was a Filipino statesman, lawyer, human and civil rights defender, and national athlete. He is often referred to as the "Grand Old Man of Philippine Politics."
He served as the Solicitor General for two terms. Following his election in 1947 where he placed 1st with the highest number of votes among the Senate candidates, he then had a sterling career as a long-time senator in Philippine Senate History, being elected to four consecutive terms from 1947 until 1971, for a total of 24 straight years in the senate. He was a fierce nationalist and principled politician. A staunch opponent to the martial law regime under Ferdinand Marcos, he marched and led rallies in the Parliament of the Streets. He is also equally renowned for his efforts to stop the continued presence of US military bases in the Philippines through the Anti-Bases Coalition (ABC).