Electronic Journal of Differential Equations, Vol. 2021 (2021), No. 17, pp. 1-10. Title: Uniform regularity of fully compressible Hall-MHD systems Authors: Jishan Fan (Nanjing Forestry Univ., Nanjing, China) Yong Zhou (Sun Yat-sen Univ., Zhuhai 519082, China) Abstract: In this article we study a fully compressible Hall-MHD system. These equations include shear viscosity, bulk viscosity of the flow, and heat conductivity and resistivity coefficients. We prove uniform regularity estimates. Submitted November 10, 2020. Published March 21, 2021. Math Subject Classifications: 76W05, 35Q80, 70S15. Key Words: Hall-MHD; uniform regularity; compressible