Pierre Garnier, comte de Laboissière (11 March 1755 – 14 April 1809) was a French army general who commanded an infantry division during the War of the Second Coalition.

Napoleon appointed him to the Sénat conservateur in 1802, awarded him the Commander's Cross of the Légion d'Honneur in 1804 and made him a comte de l'empire in 1808.

One of his officers placed his battery is a badly exposed position, and a body of Prussian cavalry led by Gebhard Leberecht von Blücher pounced on it, seizing two artillery pieces.

The attack in the center made good progress, but Laboissière sent Saint-Cyr a number of messages for help, claiming that his brigade was in the process of being overwhelmed.

Saint-Cyr then returned to the center to complete the rout of Maximilian Anton Karl, Count Baillet de Latour's Austrian army.