Long Yuan Miguel Gutiérrez Feng (born February 23, 1995) is a Mexican-American swimmer.

He competed for Mexico in the men's 100 metre butterfly event at the 2016 Summer Olympics; his time of 53.34 seconds in the heats did not qualify him for the semifinals.

[1][2] Gutiérrez was born in Mexico and immigrated to Salt Lake City with his family when he was three years old.

[3] He was a member of Brighton High School swim team, and currently still holds the 5A state record in the 200-yard freestyle.

[4] Long holds the Mexican national record in the men's 100 butterfly with a lifetime best time of 52.22.