Josias Manzanillo Adams
- Bats Right, Throws Right
- Height 6' 0", Weight 190 lb.
- Debut October 5, 1991
- Final Game September 22, 2004
- Born October 16, 1967 in San Pedro de Macoris, San Pedro de Macoris, D.R.
The Mitchell Report included a statement from Kirk Radomski that he saw Manzanillo being injected with steroids in 1994. A lawyer for Manzanillo said that Josias admitted to buying steroids but never used them.