Steven Mclaren (47) received the honour from the original International Taekwondo Federation (ITF).
It means he has levelled up from his previous status as senior black belt.
Mr McLaren told the Advertiser: “It’s the result of 25 years promoting taekwondo around the UK, Europe, and the world.
“I’m lucky enough for this to be my full-time job so I feel really blessed to have competed at a high level.
“I’ve travelled the world because of it. Next Tuesday I leave to go to China, and from there I will go to North Korea to take part in the 70th anniversary celebrations.
“I’ll do some training with the national team and see how they do things there.”
He will also receive his 7th Dan Master certificate at the Taekwondo Palace in Pyongyang, which represents the spiritual home of the ITF.
The sport was developed in Korea and many patterns are named after famous landmarks.
Mr Mclaren said: “The trip is quite a bucket list thing. I’ll also be doing some sightseeing and getting a tour of Pyongyang, I think it’s important for people to know that when taekwondo was invented, the country wasn’t yet split into North and South.
Not many people get to see inside North Korea, which is known as the ‘Hermit Kingdom’ due to its isolationist ideology.
Mr Mclaren commented: “I’ve got a diplomatic visa for sport, which allows me to go in. I’ll be treated like a guest, and being a master in Korea is a big deal.
“A visit there has been on the horizon a couple of times, but things were scuppered in 2016.”
The trip coincides with Mr Mclaren’s birthday, and the 25th anniversary of his Helensburgh club ‘Steven Mclaren Martial Arts.’
He also runs a club in Glasgow’s East End, and is the coach for the Scottish national taekwondo team.