The 22-year-old striker has joined Swansea on a season-long loan with the view to a permanent transfer.
“Vasquez is a young player I know from his time at Espanyol and now Getafe,” explained Swansea boss Michael Laudrup.
“He is a little different to the strikers we have and has the characteristics we have been looking for. He will give us a different option.”
Swansea chairman Huw Jenkins added: “He is a young player with plenty of potential. He has already done well out in Spain and looks like the right signing for us at this stage.”