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

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

His name is lent to "Launois' syndrome", which is also referred to as pituitary gigantism.

[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".