Pierre-Émile Launois (24 July 1856 – 18 March 1914) was a French physician born in Moiremont, a commune in the department of Marne.

He became médecin des hôpitaux in 1895, and professeur agrégé of histology in 1898.

Launois published several articles in the field of histology, but is primarily known for his studies involving the pituitary gland.

[1] In 1910, with M. Cléret, he described "syndrome hypophysaire adiposo-génital", known today as adiposogenital dystrophy, a disorder associated with an adenohypophysial tumour or lesions of the hypothalamus.

[2][3] With Raoul Bensaude (1866–1938), he described multiple symmetrical lipomatosis, a disease sometimes known as "Launois-Bensaude syndrome".