Louis-Robert Goust (8 June 1761 â 11 July 1838) was a French architect.
Born in Beaumesnil, he won the second Grand Prix for Architecture (the future Prix de Rome) in 1786 and 1788. On 1 May 1811 he was appointed architect for the construction of the Arc de Triomphe in Paris, replacing Jean-François Chalgrin, who had died five months earlier.