| April 4 – 16|
Clay / Outdoor
| Grand Prix (Super Series)|
The 1983 Lisbon Open, also known by its sponsorship name Lights Cup, was a men's tennis tournament held in Lisbon, Portugal and played on outdoor clay courts. It was the only edition of the tournament and was held from April 4 to May 16. It was part of the Grand Prix tennis circuit as a Super Series category event.
Mats Wilander won his 6th career title and his 2nd of the year by defeating Yannick Noah in the final.
1983 Lisbon Open Wikipedia
Mats Wilander defeated Yannick Noah 2–6, 7–6, 6–4
Carlos Kirmayr / Cassio Motta defeated Pavel Složil / Ferdi Taygan 7–5, 6–4