Background: Cervical ripening is one of the most important determinants of a successful labour induction process. A safe and very effective method for cervical ripening is the placement of a transcervical Foley catheter. Studies on the efficacy of using different inflatable catheter balloon volumes with respect to the success rate and time of achieving pre-induction cervical ripening have remained inconclusive. Aim: To compare the efficacy of the use of different Foley catheter balloon volumes (30-, 50-, and 60-mL) on cervical ripening at the twelfth hour post insertion/expulsion, among pregnant women at term undergoing cervical ripening for labour induction using the 30-mL balloon volume as control. Study Design: A Triple blinded multi-arm randomized controlled trial Methods and Materials: This study was tailored according to the ‘CONSORT’ 2010 guideline for reporting RCTs, and the ethical principles of the declaration of Helsinki of the World Medical Association. Women with singleton, vertex, term pregnancy (two hundred and sixteen), a reactive non-stress test and a Bishop score ≤ 5 were assigned randomly into three groups (1:1:1) to receive a transcervical single size eighteen Foley balloon catheter inflated either with 30-mL (control arm) or 50-mL and 60-mL (intervention arm) of sterile saline and retained for a maximum duration of twelve hours. Randomization was by computer generated random permuted blocking stratified by parity. Study participants, health care providers, outcome assessors and statistician were blinded to Foley balloon catheter type. Specially designed proforma was used to collect data, pain perception and satisfaction levels xv were assessed using a numerical pain rating and 5-point Likert-like scale. Primary outcome measures were the mean change in Bishop Score and achieving a Bishop score of ≥ 6 at the twelfth hour post Foley catheter balloon insertion/spontaneous expulsion. Statistical analysis used: Data was analyzed with Statistical Package for the Social Sciences (SPSS) version 23.0 (SPSS Inc., Chicago, USA). Analyses were by intention to treat, t-test, coefficient of ANOVA, Bonferroni post hoc correction and Multivariate logistic regression. Statistical significance was set as p = 0.05. The results were displayed using flow chart and tables.