The Badminton World Federation says Bodin Issara will serve a two-year ban and Maneepong Jongjit three months.
The federation says Issara breached five sections of the players' code of conduct, including physical abuse. Jongjit broke three rules.
Issara and Jongjit were doubles partners at the 2012 London Olympics, then split in January. They opposed each other in new pairings at the Canada Open final, and brawled during a change of ends.
Issara chased Jongjit to a neighbouring court, and repeatedly punched and kicked him. Issara needed two stitches for a cut and claimed Jongjit hit him with a racket.
They can appeal the bans, which apply from July 21.
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