This study investigates the effects of dry and wet machining conditions on the cutting force (Fc) and surface roughness (Ra) during the milling of A7075 aluminum alloy. Experiments were conducted using varying feed rates (800, 1200, 1600 mm/min), cutting speeds (188, 282, 376 m/min), and depths of cut (0.5, 1.0, 1.5 mm). The results indicate that wet machining conditions significantly reduce cutting forces compared to dry machining. For instance, at a feed rate of 1600 mm/min, a cutting speed of 188 m/min, and a depth of cut of 1.5 mm, the cutting force in wet machining was reduced from 216.81 to 205.33 N. Additionally, surface roughness is consistently lower under wet conditions, improving from 0.415 μm in dry machining to 0.3918 μm in wet machining at the same feed rate. The study also reveals a strong positive correlation between cutting force and surface roughness in both machining conditions. The linear regression models developed indicate that approximately 89% of the variability in surface roughness for wet machining and 88% for dry machining can be explained by cutting force. These findings demonstrate the advantages of wet machining in terms of both reduced cutting force and improved surface quality. The use of coolant in the machining process of A7075 aluminum alloy enhances efficiency and product quality. Additionally, the strong correlation between cutting force and surface roughness suggests that cutting force measurements can be effectively used to predict surface roughness, providing a valuable tool for optimizing machining parameters.