Lacinipolia dimocki is a moth in the Noctuidae family. It is found on the eastern slope of the Washington Coast Ranges to southern California. The length of the forewings is 14.2–15.8 mm for males and 13.8–16.9 mm for females. The forewing ground colour is pale grey, with the medial area pale grey brown. The antemedial and postmedial lines are incomplete or absent, when present then best developed toward the anal margin and fading out towards the costa, the antemedial line double, sometimes with slightly paler grey infill. The postmedial line double, often forming pale, indistinct crescent opposite claviform spot. The subterminal area with diffuse dark shading in subapical and anal areas, latter sometimes with a small white crescent. The basal dash is black and crisp and the orbicular spot