thumb|Self-portrait ()
Jean-Baptiste Paulin Guérin (25 March 1783 – 19 January 1855) was a French painter who specialised in portrait painting.
Biography
He was born into a working-class family that moved to Marseille when his father acquired a locksmithing business there in 1794. During his apprenticeship in that trade, he also studied drawing at a local school and displayed some talent for it. Soon, he was spending all of his free time painting. During this time he befriended another aspiring painter, Augustin Aubert, who he joined in Paris in 1802, financing the trip by selling works to a local Baron who was an amateur art enthusiast. After that point, he devoted himself exclusively to painting.
thumb|175px|left|Portrait of [[Jean Lannes (1835)]]
For a short time, he was employed as an assistant to François Gérard while serving as an unpaid apprentice in the studios of François-André Vincent.