CRANS-SUR-SIERRE, Switzerland, Sept 2, 2012 (AFP) - Ramsay finished at 16 under par, with Australia's Marcus Fraser, Romain Wattel of France, Fredrik Andersson Hed of Sweden and England's Danny Willett all on 12 under.
It is the second tour title of Ramsay's career after his triumph at the South African Open in 2010, and the second win in as many weeks for a Scotsman, following Paul Lawrie's success at the Johnnie Walker Championship at Gleneagles last weekend.
"It was always going to be difficult because Paul is a fantastic player, but my plan was just to play the golf course and pretend I was playing with my two best mates," Ramsay said after seeing off the challenge of fellow Aberdeen native Lawrie, who slipped back to joint-sixth after a 70.
"That was my plan all week and it worked. I managed to stay patient. A few deep breaths along the stretch and holing that final putt felt so, so good. You can't buy that feeling."
A third-round 64 gave Ramsay the lead coming into the final round by a stroke from Lawrie, and he started superbly, going through the front nine in just 31 strokes.
Victory appeared certain from the moment he went four shots clear thanks to birdies at three and four.
He dropped his first shot of the day at the 13th, but then produced a stunning eagle three at 14, and another bogey at 17 could not prevent him from claiming the title.
The 29-year-old is the first Scotsman to win in Crans-sur-Sierre since Colin Montgomerie back in 1996.
That was despite Fraser, Wattel and Andersson Hed also enjoying rounds of 66, although Willett, who had come into the day one shot adrift of the lead, needed to do better than a 69 to stay in contention for a second title of the season.
Another Englishman, Lee Slattery, shot the round of the day, his 64 featuring two eagles and taking him to eight under for the weekend.
Leading European Masters scores after the final round at Crans-sur-Sierre here on Sunday (GBR and IRL unless stated, par 70):
(Note: par 71, reduced to par 70 for round 3 after heavy rain):
267 - Richie Ramsay 69 68 64 66
271 - Marcus Fraser (AUS) 68 68 69 66, Romain Wattel (FRA) 67 70 68 66, Fredrik Andersson Hed (SWE) 65 73 67 66, Danny Willett 67 67 68 69
272 - Bernd Wiesberger (AUT) 68 70 68 66, Felipe Aguilar (CHI) 68 69 68 67,
Paul Lawrie 69 66 67 70
273 - Anders Hansen (DEN) 68 70 67 68, Jamie Donaldson 69 69 66 69
274 - Miguel Angel Jimenez (ESP) 77 65 66 66, David Lynn 73 68 65 68, Julien Quesne (FRA) 68 65 70 71
275 - Michael Campbell (NZL) 70 71 67 67, Marcel Siem (GER) 68 72 68 67, Lee Slattery 68 74 69 64, Jaco Van Zyl (RSA) 69 68 67 71, Mathias Gronberg (SWE) 70 69 65 71
276 - Tommy Fleetwood 70 66 73 67, Darren Fichardt (RSA) 70 72 67 67, Oliver Fisher 65 73 72 66, Brett Rumford (AUS) 71 68 67 70
277 - Robert Coles 66 70 73 68, Scott Barr (AUS) 66 72 71 68, Michael Jonzon (SWE) 71 67 69 70, Sam Little 67 71 68 71
278 - Alexander Noren (SWE) 71 69 69 69, Johan Edfors (SWE) 67 74 66 71, Simon Dyson 69 70 67 72, Thomas Levet (FRA) 68 70 68 72, Estanislao Goya (ARG) 74 66 71 67, David Howell 66 70 69 73, Joost Luiten (NED) 71 71 63 73
279 - David Drysdale 68 74 67 70, Steve Webster 69 71 69 70, Gregory Bourdy (FRA) 63 75 72 69, Stephen Gallacher 67 71 73 68, Matteo Manassero (ITA) 71 70 70 68, Gregory Havret (FRA) 69 72 70 68, Lorenzo Gagli (ITA) 70 70 71 68
280 - Fabrizio Zanotti (PAR) 69 72 68 71, Shankar Prasad Chowrasia (IND) 71 71 67 71, Peter Hedblom (SWE) 72 70 67 71, Alex Cejka (GER) 69 71 69 71, Jason Knutzon (USA) 70 72 66 72, Richard Sterne (RSA) 72 69 69 70, Jyoti Randhawa (IND) 68 73 71 68, Graeme Storm 68 70 67 75
281 - Mardan Mamat (SIN) 71 71 68 71, Victor Dubuisson (FRA) 68 71 69 73. Shane Lowry 69 71 68 73, Rhys Davies 66 75 71 69, Maarten Lafeber (NED) 69 73 71 68, Rikard Karlberg (SWE) 72 67 66 76
282 - Marc Warren 76 66 68 72, Michael Hoey 70 68 72 72, Adrien Saddier 70 72 71 69, Scott Hend 71 70 74 67
283 - David Lipsky (USA) 70 70 68 75, Peter Hanson (SWE) 69 69 76 69