Ted Lyon (b. 1939) is a researcher, writer, and ecclesiastical leader in Latin America.

Thomas Edgar (Ted) Lyon, Jr. was born on May 13, 1939 in Salt Lake City to T. Edgar Lyon and Laura Hermana Forsberg. He graduated from the University of Utah with a bachelor's degree in Spanish Literature. He subsequently received a scholarship to study at the University of California-Los Angeles and attained his doctorate there. During his academic career, Lyon taught at the University of Oklahoma, the University of Wisconsin, and finally at Brigham Young University in the Spanish department. During his stay at BYU, Lyon wrote several publications in the form of books and articles, which were published mainly in South America. With his wife, Cheryl, Lyon served for three years as a mission president in Osorno, Chile from 1996 to 1999. Shortly thereafter, Lyon was called to serve as a MTC president in Santiago, Chile from 2002 to 2004. In 2006, Lyon was named Honorary Consul of Chile, a position expected to last five years. Additionally, Lyon has traveled to every Spanish-speaking country in Latin America. Among these visits, Lyon participated in service projects in Mexico, Guatemala, and El Salvador. Lyon and wife Cheryl have five children and multiple grandchildren. He currently resides in South America and holds permanent resident status in Chile.