This Q. depends on which Tanner it is.
Will Wright is 51 years old (birthdate: January 20, 1960).
Marty Wright is 46 years old (birthdate: October 31, 1964).
Kit Wright is 66 years old. He was born on June 17, 1944.
Alexis Wright is 60 years old (birthdate: November 25, 1950).