Pablo Valenzuela (Latin American Spanish: [ˈpaβlo βalenˈswela]; born June 13, 1941) is a Chilean biochemist dedicated to biotechnology development.

He is one of the cofounders of the biotechnology company Chiron Corporation and of Fundacion Ciencia para la Vida,[3] a private non profit institution where he is currently working.

[4] As Research Director Pablo Valenzuela developed a variety of biotechnological products, specially in the blood banking industry.

[5][6] The invention of the recombinant vaccine against Hepatitis B virus was chosen by Business Week as one of the three most innovative technological products of the year 1986.

Pablo Valenzuela is the scientist responsible for the development of biotechnology products in USA and Chile in the area of international diagnostics, blood banking and pharmaceutical.