Radamés Eliud Treviño Llanas[a] (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.

[1] On 21 October 1967 he rode the individual pursuit world record in a time of 4'49.73" on a velodrome in Mexico.

[2] Treviño died after a crash during a regional race between Pachuca and Mexico City.

This biographical article relating to Mexican cycling is a stub.