Paksiw is a Filipino cooking technique that refers to various dishes that are simmered in vinegar. The method is used in the preparation of fish or meat-based dishes which can also incorporate additional ingredients such as garlic, vegetables, seasonings, and various spices.

The most popular dishes that fall into this category include pork-based paksiw na baboy and paksiw na isda that employs fish as the main ingredient. Paksiw dishes are usually served with rice on the side.