The objective of this study was to determine whether dairy calves can discriminate among people based on the colour of their clothing. For six days a week, a familiar rewarder, who always wore the same coloured clothing, fed, patted and spoke gently to the calves while they were in their individual pen. The calves were then tested in a Y-maze, and had to make a choice: if they went to the familiar person, they received a milk reward. The calves did not receive anything, when they did not make the correct choice. The calves were tested eight times. Four experiments were conducted. In the first experiment, the familiar rewarder was in one arm of the maze (which was randomized), but the other arm was empty. Eleven of the 14 calves tested successfully completed the test. In the second experiment, a new group of calves were tested to determine if they could successfully discriminate between the familiar rewarder (wearing same clothes as during the familiarization period) and a stranger (wearing different coloured clothes). All calves successfully completed this test. The third experiment tested whether calves could discriminate between the rewarder and non-rewarder when they were both wearing clothes of the same colour. None of the calves were successful during this test. In the fourth experiment, the rewarder and non-rewarder wore clothes of the same colour, but they were a different colour than what was worn during the familiarization period. Only one calf was successful. The results indicate that colour cues are used by young calves to distinguish between people. The Y-maze is a useful method to use when studying the discriminatory abilities of calves.