Electronic Journal of Differential Equations, Vol. 2025 (2025), No. 93, pp. 1-13. Title: Mixed local and nonlocal critical Schrodinger-Kirchhoff-Poisson type systems with logarithmic perturbation Authors: Shengbing Deng (Southwest Univ., Chongqing, China) Guorong Zeng (Southwest Univ., Chongqing, China) Abstract: In this article, we consider the mixed local and nonlocal critical Schrodinger-Kirchhoff-Poisson type system with logarithmic perturbation $$\displaylines{ -M(\int_{\Omega}|\nabla u|^2\,dx)\Delta u+a(-\Delta)^{s}u+\lambda\phi u =\eta |u|^{q-2}u\ln|u|^2+|u|^4u, \quad \text{in }\Omega, \cr -\Delta\phi=u^2,\quad \text{in }\Omega,\cr \phi=u=0,\quad \text{in } \mathbb{R}^3\setminus\Omega. }$$ where $\Omega\subset\mathbb{R}^3$ is a bounded domain with smooth boundary, $00$ are two parameters, $M(t)=a+bt$ and $a,b$ are nonnegative constants. With the help of variational methods, the existence of a non-trivial ground state solution is obtained. Submitted August 8, 2025. Published October 06, 2025. Math Subject Classifications: 35M12, 35R11, 35A15, 35B33. Key Words: Ground state solution; mixed local-nonlocal operators; logarithmic nonlinearity; Schrodinger-Kirchhoff-Poisson system.