Virus Infecting Tomato Plants in Northern Nigeria.     Arab Journal of Plant Protection. A field survey to identify Tomato ringspot virus (ToRSV) in the Sudan savanna region (Jigawa, Kano and Gombe) of Nigeria was conducted during the 2017 and 2018 dry seasons. Three Local Government Areas (LGAs) per State were chosen on the basis of tomato cultivation history from which 3 farms each were sampled. A total of 2160 tomato leaves were randomly sampled from all fields (n=9) and specifically tested against ToRSV by the TAS-ELISA technique. The results obtained established the level of spread of ToRSV disease in the three states surveyed. The Kaltungo LGA of Gombe State recorded significantly (P ≤0.05) the highest ToRSV incidence (29%), followed by Akko LGA (23.5%), whereas the least virus incidence (17.5%) was recorded in Yamaltu-Deba LGA. In Jigawa State, the highest virus incidence of 19.5% was recorded at Kazaure LGA, followed by Kirikasama LGA (16.6%), whereas the Hadejia LGA had the least incidence of 10.4 %. In Kano State, ToRSV incidence was highest (31.1%) in Kura LGA, followed by Bagwai LGA (21.1%), whereas Garun Mallam LGA recorded the lowest virus incidence (16%). This is the first report of ToRSV on tomato in Nigeria. Informing tomato farmers on the effective management of this yield-limiting virus in the region is essential.