| First Name | J.B. |
| Last Name | Gaynor |
| Full Name at Birth | John Bernard Gaynor |
| Age | 21 |
| Date of Birth | July 15, 1990 |
| Birthplace | Harbor City, California |
| Build | Average |
| Eye Color | Brown - Dark |
| Hair Color | Brown - Dark |
| Star Sign | Cancer |
| Religion | Christian |
| Ethnicity | Hispanic |
| Nationality | American |
| Occupation Category | Actor |
| Claim to Fame | Young Eddie in Grounded for Life |
| Father | John Gaynor |
| Mother | Mary Gaynor |
| Sister(s) | Jennifer Gaynor |
John Bernard "J.B." Gaynor (born July 15, 1990) is American teen actor. He is perhaps best known for playing Young Eddie in Grounded for Life. Gaynor was born in Harbor City, California, to John and Mary Gaynor. J.B. decided to pursue an acting career growing up watching his sister, Jennifer. Jim Carrey and John Travolta have influenced the young star. J.B. would like to be a basketball player or a veterinarian.
Selected J.B. Gaynor film and TV show credits: