This study assessed Special needs students’ academic performance in Mathematics in Ondo State Special needs schools. It was a qualitative survey of the ex-post facto research design. Previous Mathematics achievement scores of special needs students were collected and collated. The findings of this study revealed that: majority of the special needs students in Ondo State achievement score in Mathematics was above average, there was no significant difference in the achievement scores of hearing impaired and visually impaired students in Mathematics in Ondo State, there was no significant difference in the achievement scores of the visually impaired and mentally retarded students in Mathematics in Ondo State and there was no statistically significant difference among the achievement scores of visually impaired, hearing impaired and mentally retarded students’ in Mathematics in Ondo state.