Aurelijus Rutenis Antanas Mockus ?ivickas (born 25 March 1952) is a Colombian mathematician (mathematics), philosopher (philosophy), and politician (politics).

The son of Lithuanian (Lithuanian people) immigrants, he left his post as the dean of the National University of Colombia in Bogot� in 1993, and later that year ran a successful campaign for mayor. He proceeded to preside over Bogot� as mayor for two (non-consecutive) terms, during which he became known for springing surprising and humorous initiatives upon the citys inhabitants. These tended to involve grand gestures, including local artists or personal appearances by the mayor himself — taking a shower in a commercial about conserving water, or walking the streets dressed in spandex and a cape as Supercitizen.On the 14th of March he was elected in a public consultation as the Colombian Green Party (Green Party (Colombia)) candidate for the presidential election in 2010 (Colombian presidential election, 2010).

On April 4, 2010, Antanas Mockus teamed up with Medell�ns former mayor Sergio Fajardo, choosing Fajardo as his vice-presidential running mate. On April 9, 2010 he announced that he had been diagnosed with Parkinsons disease. He told La W radio: "The prediction is that this will not affect my mental activities. I think it is absolutely fitting to tell the people about the diagnosis and about the prognosis ? which is 12 years or more of normal life thanks to medication." Mockus and Juan Manuel Santos polled almost equally but Santos led in the election, which will be followed by a runoff.