The Lisbon Open, also known by its sponsorship name Lights Cup, is a defunct men's tennis tournament. It was held for one year, in 1983, in Lisbon, Portugal and was played on outdoor clay courts. It was a Super Series category tournament and was part of the Grand Prix tennis circuit.

Lisbon Open
Defunct tennis tournament
Event name	Lights Cup
Tour	Grand Prix (Super Series)
Founded	1983
Abolished	1983
Editions	1
Location	Lisbon, Portugal
Surface	Clay / outdoor
Current champions (1983)
Singles	Mats Wilander
Doubles	Carlos Kirmayr Cássio Motta

The tournament was organized by Hans Burkert, director of the Frankfurt Grand Prix tournament. He decided to move the Frankfurt Super Series tournament, held from 1980 until 1982, to Portugal because of the competition of other major events in West Germany and with the aim to develop professional tennis in Portugal.^[1]