Radamés Eliud Treviño Llanas (7 December 1945 – 12 April 1970) was a Mexican road and track cyclist who won two silver and one bronze medals at the 1967 Pan American Games: in the 100 km team time trial and in the 4 km pursuit, individual and with a team. He competed in these three events at the 1968 Olympics with a best result of fifth place in the individual pursuit.

On 21 October 1967 he rode the individual pursuit world record in a time of 4'49.73" on a velodrome in Mexico. Later in 1969 he set a world hour record.

Treviño died after a crash during a regional race between Pachuca and Mexico City. A velodrome in Mexico is named in his honor.