The Czech was rampant in dismissing her opponent in less than an hour on Saturday, cruising to victory with a number of powerful groundstrokes that Bouchard could not live with.
Bouchard, playing in her first grand slam final at the age of 20, failed to get any foothold in the match and was swept aside by the sixth seed, who repeated her 2011 success when she defeated Maria Sharapova in straight sets.
In winning a second title at the All England Club, Kvitova becomes just the fourth multiple victor at the grass-court slam since 1990, following in the footsteps of the Williams sisters and Steffi Graf.
An opening-game hold from Bouchard helped to settle some of her early nerves, but Kvitova forged ahead in game three with a cross-court forehand to seal the first break of the match.
And then the weight of the occasion appeared to get to the young Canadian, who double-faulted in game seven to hand Kvitova two more break points, and the Czech took full advantage with a crushing forehand down the line that left Bouchard helpless.
Bouchard showed some fight by clawing a break back in the next, but her hard work was undone immediately as Kvitova took a one-set lead with a ferocious forehand return that the world number 13 could only send wide.
Kvitova went from strength to strength in the second set, moving 2-0 ahead with a venomous backhand at Bouchard's feet that was never likely to come back.
With momentum on her side, Kvitova went for the jugular as she pressed home the advantage against an opponent now bereft of ideas.
Fittingly, it was a superb cross-court backhand winner that sealed Kvitova's triumph as she celebrated a second slam success, while Bouchard was left to consider the lessons of a maiden final defeat.