Nicolas Bernard Guiot de Lacour (25 January 1771 – 28 July 1809) led infantry and cavalry brigades during the First French Empire under Napoleon.

He is one of the names inscribed under the Arc de Triomphe on Column 11 and his bust is in the Hall of Battles at the Palace of Versailles.

On 1 October 1799 in an action near Muotathal, he was captured by the Russians and formally surrendered to the Cossack commander Adrian Karpovich Denisov.

On 6 October, Denisov arrived on the other side of the pass in a terrible state of health and was met by Lacour who plied him with warm soup and blankets.

Lacour led a brigade in Julien Augustin Joseph Mermet's cavalry division consisting of four squadrons each of the 24th and 30th Dragoon Regiments.

[9] On 11 November 1805, the Austrians fought a successful rear guard action at Valvasone on the Tagliamento River in which the 23rd and 30th Dragoons were present.

General-major Heinrich Bersina von Siegenthal commanded two artillery pieces and 1,200 Austrians in the De Ligne Infantry Regiment Nr.