Charles Percier ([ʃaʁl pɛʁsje]; 22 August 1764 – 5 September 1838) was a neoclassical French architect, interior decorator and designer, who worked in a close partnership with Pierre François Léonard Fontaine, originally his friend from student days. For work undertaken from 1794 onward, trying to ascribe conceptions or details to one or other of them is fruitless; it is impossible to disentangle their cooperative efforts in this fashion.