This paper offers a new comprehensive catalogue and discussion of Late Helladic III chariot kraters, and explores what they reveal about horse–human relations in Greece and Cyprus in the Late Bronze Age. The nearly 400 known examples of chariot kraters were produced in mainland Greece and exported to Cyprus and the Levant. Although the vessels were surely adapted to local contexts, the motif of horses and chariot was part of the ‘international’ spirit of the Late Bronze Age and was meaningful throughout the eastern Mediterranean. Following a discussion of the chronological and geographical distribution of the kraters, alongside notes regarding changes in shape, we examine each of the elements of the characteristic horses-and-chariot motif in depth. This close analysis, supplemented by evidence from faunal remains, Linear B and other visual media, and combined with modern equine knowledge, allows us to understand some of the complexities of horse–human relations in ancient Greece and Cyprus. Through this, we see a co-becoming and mutual training of horse and human in the endeavour to become a successful chariot team; we can also recognise elements of ancient acknowledgement of equine agency and personhood. Horses and humans acted and reacted to each other, thereby living and learning together. The images on the chariot kraters reflect both ancient observation and knowledge of horses and caballine behaviour and artistic conventions and developments. Finally, horses were expensive animals to breed, keep and train (with accompanying expensive gear), and direct physical contact would have been for the fortunate few. The chariot kraters allowed a broader segment of the population to engage with horses and chariots, albeit indirectly.