Luis Estuardo Martínez Perez (19 November 1966 – 31 January 2022) was a Guatemalan middle- and long-distance runner. He competed in the men's marathon at the 1996 Summer Olympics.

International competitions Representing 1987UniversiadeZagreb, Yugoslavia4th (h)800 m1:51.4726th (h)1500 m3:52.281988Ibero-American ChampionshipsMexico City, Mexico9th (h)800 m1:54.066th1500 m4:04.291989Central American and Caribbean ChampionshipsSan Juan, Puerto Rico 1500 m3:44.44UniversiadeDuisburg, West Germany32nd (h)800 m1:54.7627th (h)1500 m3:57.991990Central American GamesTegucigalpa, Honduras1st800 m1:51.01st1500 m3:52.8Central American and Caribbean GamesMexico City, Mexico5th800 m1:51.684th1500 m3:51.551991Central American ChampionshipsTegucigalpa, Honduras1st800 m1:51.521st1500 m3:53.79World ChampionshipsTokyo, Japan29th (h)800 m1:49.0733rd (h)1500 m3:46.391992Ibero-American ChampionshipsSeville, Spain15th (h)800 m1:53.117th1500 m3:50.131993Central American and Caribbean GamesPonce, Puerto Rico5th1500 m3:47.685th3000 m s'chase9:08.761994Central American GamesSan Salvador, El Salvador3rd800 m1st1500 m3:52.051995Pan American Games Mar del Plata, Argentina8thMarathon2:18:111996Olympic GamesAtlanta, United States82thMarathon2:29:551997World ChampionshipsAthens, Greece50thMarathon2:31:11Central American GamesSan Pedro Sula, Honduras1stMarathon2:48:321998Central American and Caribbean GamesMaracaibo, Venezuela7thMarathon2:39:14

Personal bests Outdoor 800 metres – 1:49.07 (Tokyo 1991) 1500 metres – 3:44.44 (San Juan 1989) former Marathon – 2:29:55 (Atlanta 1996)

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