Intestinal parasitosis is endemic in sub-Saharan Africa, a region with the highest burden of HIV/AIDS in the world. Although many researchers have defined the spectrum of intestinal parasites in the HIV seropositive Nigerians and at various levels of CD4+ counts, there appear to be paucity of information on the relationship between intestinal parasitosis and viral load among Nigerians living with HIV/AIDS. The objective of this study was to correlate the pattern and density of intestinal parasitosis in HIV seropositive individuals, to the degree of their viraemia. A hospital-based, descriptive, cross-sectional study was done involving 500 participants, comprising of 250 HIV positive patients in the test group and 250 HIV negative patients in the control group. Participants were recruited from the HAART clinic and GOPD of UITH, Ilorin. Blood and stool samples were collected from each participant; the blood was used to screen participants for HIV infection, CD4+ cell count and HIV viral load estimation. The stool sample was examined for presence of gastrointestinal parasites. 1 Data was analysed using the Statistical Package for Social Sciences (SPSS), statistical software package version 19, licensed to IBM Company since 2009. Results were presented in tabular forms and figures as found applicable. Categorical variables were compared by Chi square test and continuous variables were described by means ± SD and compared by the Student’s T-test. Statistical significance was tested at predetermined p-value of <0.05. Other statistical tests used were Spearman Correlation, Pearson Correlation, Receiver Operating characteristic (ROC) curve which was drawn using the MedCalc® software, Analysis of Variance (ANOVA) and the Least Significant Difference (LSD) test was used when ANOVA is statistically significant to determine the smallest significant result between two means, enabling direct comparism of two means from two groups. Results were presented in tabular forms and figures as found applicable. The prevalence of intestinal parasitosis of 60.8% in HIV positive patients was significantly higher than 16.4% in HIV negative controls (p<0.001). Single intestinal parasitosis is commoner (48.8%) than multiple parasitosis (12.0%) in the HIV positive test group. Parasites identified from test subjects were Ascaris lumbricoides (10.4%), hookworm (3.6%), Strongyloides stercoralis (2%) and the coccidian parasites (55.6%). The coccidian parasites are statistically significantly (p<0.001) present in HIV positives (55.6%) compared to HIV negative controls (6.8%). Diarrhea is significantly present in HIV positives compared with HIV negatives