Background The cervix is one of the organs responsible for the sustainability of pregnancy and its eventual outcome. Sonographic evaluation of the cervix may help in assessing its variation in pregnancy. Most of the evaluation of the cervix was done in late pregnancy thus; there is limited knowledge on its assessment before the age of viability and possible pregnancy outcome(This outcome includes late miscarriages and early preterm delivery). It is therefore important to assess the cervical status before the age of viability. Aim To determine the mid- pregnancy cervical parameters and their relationship with pregnancy outcome among women receiving antenatal care at the University of Ilorin Teaching Hospital, Ilorin. Methodology Setting The study was carried out in the department of Obstetrics and Gynaecology, University of Ilorin Teaching Hospital. Study Population They were pregnant women that received antenatal care and delivered at UITH Ilorin. Study Design It was a prospective study. Pregnant women who consented at the gestational age of 20 – 24 weeks and met the criteria for the study were recruited until the sample size was completed. A transvaginal ultrasound was done to assess the cervical length and internal Os diameter after the initial abdominal ultrasound to exclude low lying placenta, multiple gestations and to satisfy the inclusion criteria. The pregnancy outcome was assessed by determining the gestational age at delivery, spontaneous onset of labour, induced labour, duration of labour and mode of delivery. Data Analysis The data were analyzed with Statistical Package for Social Science (SPSS) software package version 20.