This study aimed to assess the effect of various surface roughening techniques on the shear bond strength of three new-generation zirconia ceramics. Specimens of 4Y-TZP/5Y-TZP zirconia (IPS e.max ZirCAD), 3Y-TZP monolithic zirconia (Vita YZ HT), and 3Y-TZP/5Y-TZP zirconia (IPS e.max ZirCAD Prime) were prepared using CAD/CAM and sintered as per manufacturers' instructions. Four surface treatments—control, sandblasting, tribochemical silica coating(TSC), and Er:YAG laser etching—were applied to yield 12 subgroups (n = 10). Specimens were treated with an MDP primer and cemented using dual-cure self-adhesive resin cement. Shear bond strength was measured using a universal testing machine at 1 mm/min. Statistical analysis included Shapiro-Wilk, two-way analysis of variance (ANOVA), and Tukey HSD tests (p < 0.05). Sandblasting and TSC significantly improved shear bond strength (p <.001). The Vita YZ HT group exhibited higher bond strength compared with IPS e.max ZirCAD (p = 0.004). Cohesive and mixed fractures predominated in sandblasting and TSC groups, whereas Er:YAG laser treatment yielded bond strength similar to controls (p =.386). Shear bond strength is influenced by the type of zirconia ceramic, surface treatment, and their interaction (p <.001). Sandblasting and TSC are highly effective, underscoring the clinical importance of surface preparation for durable zirconia bonding.