<p>The present study investigates numerically the effect of wavy surface topology on the dynamic and stability performance of the journal bearing. The Reynolds equation is modified to account for the impact of surface waviness, and the lubricant domain is discretised using the finite element method to obtain dynamic characteristics such as stiffness and damping coefficients and stability parameters, i.e., threshold speed. Different wave numbers in the axial, circumferential and mixed directions are considered at variable wave amplitudes in different regions at an eccentricity ratio of 0.2 to 0.8 to obtain the optimum parameters. According to the calculated results, the waviness on the bearing surface increases threshold speed, damping, and stiffness coefficients, and the maximum enhancement is found in the case of circumferential waviness in comparison with mixed or axial waviness. In addition, as the wave amplitude increased, the stability of the bearing improved.</p>