Hugh was awarded the highest of the four levels of the Order of Australia, and was joined by his wife of 23 years, Deborra-Lee Furness, for the ceremony by Governor General David Hurley in Australia's capital Canberra on Friday, September 13.
And while "The Wolverine" star enjoyed his big moment, Ryan shared words of support for his friend on social media.
"Hugh is one of the finest, kindest, hardest working, generous and most talented people I've had the privilege to call my friend, There's nobody better," he wrote.
The "Green Lantern" actor later re-posted a photo of Hugh after his win, joking in the caption, "None of this changes the unfortunate fact he's a complete b**tard."
The pair are longtime friends, and were famously involved in a friendly feud as Ryan tried his best to convince the actor to reprise his role as the popular Marvel Comics character one more time for a feature in a future "Deadpool" movie - after Hugh announced 2017's "Logan" would be his last outing as Wolverine.