"Hold your horses", sometimes said as "Hold the horses", is an English-language idiom meaning "wait, slow down". The phrase is historically related to horse riding or travelling by horse, or driving a horse-drawn vehicle. A number of explanations, all unverified, have been offered for the origins of the phrase, dating back to usage in Ancient Greece.

The saying is typically used when someone is rushing into something. "Cool your jets" is an essentially identical idiom. However it also has a more literal meaning and in certain circumstances is the preferred idiom to use. Hold your horses" literally means to keep your horse(s) still, not to be confused with holding them in a stable. Someone is to slow down when going too fast, or to wait a moment, or to be more careful, or to be patient before acting.

It is usually followed up with an explanation to demonstrate why you should wait. For example, "Hold your horses, we have not won yet, so don't start celebrating." and "Hold your horses, you haven't thought about this yet" or "Hold your horses, you might find a better one for the same price in another store" or "Hold your horses. We're almost there."