Sara udon (皿うどん), literally "plate noodles", is a dish native to Nagasaki prefecture, Japan.

The dish consists of a base of noodles, and a topping of fried cabbage, bean sprouts and other vegetables, as well as squid, prawns, pork, kamaboko etc.

Many restaurants outside Nagasaki prefecture serve only thin noodles, which has led to the common misconception that the dish is only ever served with thin noodles.

If many people are eating together, it is customary for everyone to take their portion from a single large central dish.

There are food delivery services (demae) that specialise in sara udon for parties or offices that are working overtime.