Gigla Janashia (Georgian: გიგლა ჯანაშია; 27 September 1927, in Tbilisi – 27 April 2005) was a Georgian mathematician. He was the key author of Janashia-Lagvilava matrix spectral factorization (MSF) method. The major recognition of his achievements came after Janashia’s death, when the USPTO granted the patent to this method and its applications, which is extremely rare for pure mathematicians.