Wigberto "Ka Bobby" Ebarle Tañada Sr. (Tagalog: [tɐˈɲada]; born August 13, 1934) is a Filipino politician.

In 1956, he received his Bachelor of Laws degree at Manuel L. Quezon University and passed the bar exams four years later.

His father taught him to save on money during his studies, while sending "balikbayan" (back home) gifts of San Miguel Beer to his dormitory.

He ran for senator under the banner of LABAN (Coalition of the Liberal Party, PDP-Laban, NUCD, Bansang Nagkakaisa sa Diwa at Layunin (BANDILA), etc.)

In 1991, he led the "Magnificent 12", the group of the senators who support the rejection of a new lease for the Subic Bay Naval Base.