Martín Alonso Ramírez Ramírez (born November 8, 1960, in Bogotá) is a Colombian former road bicycle racer.
He won the Critérium du Dauphiné Libéré in 1984.
His mother was a homemaker while his father was a construction worker.
Feeling the intense need and desire to earn an income, at age 16 he decided to work as a delivery man for a well known drug store in Bogota, called the Ultramar.
This biographical article relating to Colombian cycling is a stub.