Yes — a small amount of dust in a DSLR viewfinder is normal and usually nothing to worry about if it does not appear in your photos. Dust can settle on the focusing screen, mirror box, or viewfinder optics, and because those parts are not the sensor, it won’t affect image quality.

A simple check is to photograph a plain white wall at a small aperture like f/22. If you don’t see the spots in the image, the dust is not on the sensor.

If it bothers you, first clean the outside eyepiece glass. You can also try a bulb blower with the camera facing downward to dislodge loose dust. Avoid touching or rubbing the focusing screen, as it is delicate and easy to mark.

It’s also wise to keep the camera and lenses reasonably clean and stored in a closed bag, since dust inside the body can eventually reach the sensor. But a few tiny viewfinder specks are common, and many photographers simply live with them.