The study aimed at identifying an HIV & AIDS capacity building needs for primary school teachers in North Central Nigeria. The study was guided by one research purpose and one question. The study adopted survey research design. The population for the study was made up of 103, 506 public primary school teachers in the Zone. A sample of 1600 public primary school teachers, drawn for the study using multi-stage sampling procedure. The instruments used for data collection were the Focus Group Discussion, HIV & AIDS Capacity building Need Assessment Questionnaire (HACBNAQ) for Teachers). Data collected were analyzed using mean and standard deviations to answer the research question. The findings of the study showed that HIV & AIDS capacity building needs of primary school teachers among others include: Ability to provide solution to stigmatization suffer by people living with HIV/AIDS in our society ability to assist learners in having a clear and factual view of oneself regarding HIV/ AIDS; Ability to provide learners with information and skills necessary for rational decision making about sexual health to avoid being infected with HIV/ AIDS; Ability to help learners to recognize symptoms of HIV/ AIDS infection; Ability to understand fully the concept of HIV & AIDS; and Ability to cultivate and build positive self- esteem for people living with HIV& AIDS. Based on the findings and implications of the study, it was recommended among others that primary school teachers should be exposed to HIV & AIDS capacity building programme from time to time in order to update their knowledge and effectiveness in educating pupils about the virus and how to prevent it.