Guadalajara Open

{{Not to be confused with|Guadalajara Open Akron}}{{Infobox tennis tournament

| name = Guadalajara Open

| type = defunct

| founded = 1978

| ended = 1981

| editions = 3

| location = Guadalajara, Mexico

| event name =

| tour = Grand Prix

| surface = Clay / outdoor

}}

The Guadalajara Open is a defunct men's tennis tournament that was played on the Grand Prix tennis circuit founded in 1978. The event was held in Guadalajara, Mexico and was played on outdoor clay courts. Unseeded Gene Mayer won the first singles title while Sandy Mayer and Sherwood Stewart partnered to win the doubles title.{{cite book|title=World of Tennis 1979 : a BP yearbook|year=1979|publisher=Macdonald and Jane's|location=London|isbn=978-0354090681|page=119|editor=John Barrett}} The tournament then became part of the ATP Challenger Series in 1979, and played one final time in 1981.

Guadalajara currently is host to the Abierto Zapopan and Guadalajara Open Akron.