Livestock farmers may need a reference range of testicular sizes and sperm reserves to ascertain the reproductive efficiency of a male. However, information on camel testicular morphometry and gonadal sperm reserve in semi-arid Nigeria is scanty. This study was designed to provide information on testicular morphometry and gonadal and extragonadal sperm reserves of camels in the Sahel region of Nigeria. Testes of 15 mature and healthy camels were obtained after slaughter from the Maiduguri central abattoir. Scrotal circumference was measured on the live animal to the nearest centimetre. Weights of each testis, epididymis and its distinct parts and tunica albuginae were obtained to the nearest milligram. The length and width of each testis and the length of the distinct parts of the epididymis were measured to the nearest millimetre. Gonadal and extra-gonadal sperm reserves were also estimated. All data were subjected to descriptive statistics, paired sample t-test and correlation analysis. Scrotal circumference ranged from 24.00 to 49.00 cm with an average of 38.59±2.41 cm. A high significant relationship (r= 0.69) between scrotal circumference and paired testis weight were observed. The left and right testes had similar sperm reserve. The sperm reserve of the left caput and caudal were however, higher (p> 0.05) than those of the right. The mean epididymal sperm reserve for caput, corpus and caudal were 84.857× 106, 268.71× 106 and 542.79× 106, respectively. It was concluded that testicular morphometric characteristics have the potential to be used in predicting sperm production capacity in live camels' bulls.