We observed the field of GRB 191106A (Marshall et al., GCN 26177) using the Nordic Optical Telescope (NOT) equipped with the ALFOSC camera. Observations started at 19:35:51 UT on 2019-11-06 (i.e., 3.35 hr after the BAT trigger), and 16x200s Sloan z-band frames were obtained. No optical source is detected in our stacked image at the XRT position (Page et al., GCN 26190), down to a limiting magnitude of z > 22.0 at a mean time of 4.0 hr post-burst, calibrated with the nearby SDSS field.