Title: Gaussian multiplicative Chaos and related topics Abstract: The mathematical theory of Gaussian multiplicative chaos was founded by J. P. Kahane in 1985. This theory has numerous applications in mathematical physics: 2d Liouville quantum gravity in the conformal gauge (boundary and non boundary Liouville measure, KPZ equation), the Kolmogorov-Obukhov model of energy dissipation in 3d turbulence, the maximum of log-correlated fields, etc... In this talk, we will first review the theory and discuss numerous extensions and related topics that have been developed the past few years. We will then focus more specifically on complex Gaussian multiplicative chaos, an extension of Gaussian multiplicative chaos to the complex case.