Effective period / Period of releases: 1989 - 2006

Members: Scott Billington, Nathan Williams (3), Mark Williams (25), Clifford Alexander, Herman "Ray" Brown, Johnny Batiste, Allen "Cat Roy" Broussard, Dennis Paul Williams, "Doctor" John Wilson, Russell Benoit, Gerard St. Julien, Jr., Felix James Benoit, Bobby Matthews (3)

Nathan & The Zydeco Cha Chas is an American zydeco band, founded in 1988 in St. Martinville, Louisiana.

Line-up (2019):
Nathan J. Williams, Sr. - accordion, vocals
Dennis Paul Williams - lead guitar, backing vocals
Allen Williams - bass
Djuan Francis - drums
Clifford Alexander - rubboard

Former members:
Mark A. Williams - rubboard, backing vocals
Paul Newman - bass guitar
Herman Brown, Jr. - drums