<P> Keith Thibodeaux ( born December 1 , 1950 ) is a former American child actor of television and film and a musician , best known for playing Little Ricky on the television sitcoms I Love Lucy and The Lucy - Desi Comedy Hour . His last name , which was Cajun French , was changed by producer Desi Arnaz to `` Keith '' because `` Thibodeaux '' was too difficult to pronounce . He is the last living regular appearing cast member from I Love Lucy . </P>
<P> Keith Thibodeaux ( born December 1 , 1950 ) is a former American child actor of television and film and a musician , best known for playing Little Ricky on the television sitcoms I Love Lucy and The Lucy - Desi Comedy Hour . His last name , which was Cajun French , was changed by producer Desi Arnaz to `` Keith '' because `` Thibodeaux '' was too difficult to pronounce . He is the last living regular appearing cast member from I Love Lucy . </P>
who played little ricky on the lucille ball show
who played little ricky on the lucille ball show
Keith Thibodeaux
Keith Thibodeaux