Jesús Tonatiú López Álvarez (born 2 August 1997 in Hermosillo) is a Mexican middle-distance runner specialising in the 800 metres. He represented his country in the 800 metres at the 2017 World Championships without qualifying for the semifinals. Later that year he won the gold medal at the 2017 Summer Universiade. He has qualified to represent Mexico at the 2020 Summer Olympics. His personal best of 1:45.51 set in Culiacán in 2017 was the national record. In 2021, he eclipsed this record by clocking 1:43.44 in Atlanta, GA.