The objective of this study is to determine the effect of the feeding direction and feeding speed of planing on the surface roughness of the Oriental beech (Fagus orientalis L.) and Scotch pine (Pinus silvestris L.) wood species grown in the Black Sea Region of Turkey. When preparing the specimens, the wood was planed tangentially and radially to the annual rings at a cutting depth of 1.4 mm in a milling machine with 4 blades and an 85 mm diameter. The wood was planed in the direction of spindle rotation and in the direction opposite of the spindle rotation at feeding speeds of 6 m.min(-1), 9 m.min(-1), and 12 m.min(-1) and a rotation speed of about 7200 rpm. The surface roughness values of the specimens were determined by using a stylus-type profilometer according to the ISO 4287 standards. The surface roughness was evaluated according to the R-a, R-z, and R-y principles, which are three basic parameters. The results showed that smoother surfaces could be obtained in the planing realized by feeding in spindle rotation. Furthermore, the tangential direction produced smoother surfaces compared to the radial direction and as the feeding speed increased, the surface roughness also increased.