Rynella is an unincorporated community in Iberia Parish, Louisiana, United States. The community is located 5 miles (8.0 kilometres) west of Lydia, 5 miles (8.0 kilometres) southwest of New Iberia and 3 miles (4.8 kilometres) northeast of Avery Island.

The community consists of a few residential dwellings and a volunteer fire department along Highway 329 (also known as the Avery Island Highway). The name Rynella allegedly is a portmanteau deriving from the last two letters of the first names of three local women, RosemaRY, PauliNE, and LeiLA McIlhenny (someone eventually adding an extra L to the resulting word). They were daughters of Edward Avery McIlhenny, a noted Louisiana conservationist who presided over McIlhenny Company, maker of Tabasco brand pepper sauce at nearby Avery Island. The McIlhenny family operated a general store at Rynella and he owned much of the land that now comprises and surrounds the community.