James McConnell, 69, had been on holiday with family in Pattaya, Thailand, when he visited the skydiving centre.
He leapt from a plane and landed in nearby water – missing the airstrip at the Thai Sky Adventures airbase.
Rescuers arrived at the scene and battled to save the pensioner from Dunctocher, Scotland, but he was pronounced dead upon arrival at hospital.
Colonel Chonnapat Nawalak of Nong Kham police in Chonburi said police were investigating how he died.
He said: “We’re still checking the cause of his death. He jumped from the plane and landed in the water.
“Officers were at hospital with him and the family. Paramedics tried to save him but he died.
“There are lots of different accounts of what happened… We’re investigating with the owner of the centre to find out exactly what happened.”
The British owner of the centre, Harry Harrison, today confirmed that a tourist had died but refused to comment further.
In 2015, two skydivers from the same centre recorded a near-death moment when they came within inches of being killed by the plane they had just jumped from.
Instructor Forest Pullman and his tandem jumper had dropped from 13,000ft when moments later the plane narrowly missed them – clipping part of their parachute.