Arnulfo Valenzuela was born in Chihuahua, Mexico, in May 1959. He married Silvia Pilar Porras in April 1982. They are the parents of three children.
He received a bachelor’s degree in administration from the Universidad de Estudios Contables y Administrativos in Mexico City. In 1992 he received a master in business administration degree from Instituto Panamericano de Alta Dirección de Empresa (IPADE).
He has served in numerous Church callings, including full-time missionary in Veracruz, Mexico, bishop, counselor in a stake presidency, counselor in a mission presidency, and Area Seventy.
At the time of his call, Elder Arnulfo Valenzuela had been serving as a member of the Fourth Quorum of the Seventy in the Mexico Area. He is currently serving as a member of the North America Central Area Presidency, where he has served since August 2020.
In 1981 he began working as manager of commercial accounts for Honeywell Mexico. In 2004 he was made regional director for Durman Co. and later national marketing director.