Dodt carded a five-under par final-round 67 to finish 16 under overall, a shot clear of home favourite Thongchai Jaidee and fellow Australian Scott Hend, who led going into the final round.
Word number 281 Dodt carded five birdies and no bogeys in his final round at the Black Mountain Golf Club to win his second European Tour title after success at the Avantha Masters five years ago.
A par at the 17th meant Jaidee needed a birdie at the 18th to force a play-off but victory was Dodt’s when the home favourite could only make par.
“I’m speechless – it’s just come out of nowhere,” Dodt said.
“I played really well yesterday and today but I just didn’t think I’d come out on top. I knew I was playing well but to come out and win is just a dream come true.
“To be honest, losing my card two years ago was probably the best thing that could have happened to me.
“I went home last year, spent 12 months at home, played the Asian Tour again, found myself again, found my game and to be in the winner’s circle again – it’s unbelievable.”
Jaidee was left to rue his dropped shots at the 13th and 16th holes but was happy with his performance.
“Overall I played well, but I made some mistakes with the club selection — especially on 13,” he said.
“I tried my best and it’s okay I finished second. Andrew was a deserving winner as he put up a great performance.
“I’ll try again the next time.
“I did not putt well at 18 – I didn’t stroke the ball hard enough and didn’t read the line well. But it was a good effort and I enjoyed the great support from the home crowd.”