An optical coherence tomography apparatus includes an optical system and a controller. The optical system is configured to allow an optical condition to be changed, includes an optical scanner, and is configured to acquire optical coherence tomography data of an object to be measured by scanning the object to be measured with measurement light. The controller is configured to control the optical scanner so as to scan the object to be measured with the measurement light along a fast scan axis with reference to a reference position moved along a slow scan axis. The controller is configured to change the optical condition in synchronization with a control timing of the slow scan along the slow scan axis.