Background: The financial and psychosocial support of husbands, as well as their presence with breastfeeding mothers, may significantly increase mothers' dedication to the practice of exclusive breastfeeding for the stipulated six months to achieve desired benefits.

 Aim: The study assessed the willingness to support breastfeeding mothers to carry out exclusive breastfeeding and perceived benefits among male staff in Bowen University Teaching Hospital, Ogbomoso, Nigeria.

 Methods: A descriptive, cross-sectional study was conducted among 166 married and unmarried male staff of a private Faith-based tertiary healthcare institution. Respondents were randomly selected and consented to complete a self-structured questionnaire with Cronbach's alpha value of 0.802. Data collected were subjected to descriptive (frequencies, mean, and percentages) and inferential (chi-square test, one-way analysis of variance (ANOVA), and Spearman rho correlation) analyses at p < 0.05 level of significance using SPSS 26.0.

 Results: Majority (71.1%) of the respondents were aware of exclusive breastfeeding, with slightly above half (51.2%) having a high level of perceived benefits. More than half (63.9%) were moderately willing, compared to 35.5% that were highly willing to support female partners to achieve exclusive breastfeeding. The perception of the benefits of exclusive breastfeeding among the respondents is significantly associated with their religion (p = 0.002), educational status             (p = 0.026), current designation at work (p = 0.0001), work department (p = 0.0001) and monthly income (p = 0.0001) at p<0.05. Religion (p = 0.001), education status (p = 0.004), work department (p = 0.0001), and the current number of children (p = 0.030) of the respondents showed a significant association with their willingness to support their female partners in achieving exclusive breastfeeding at p<0.05. Statistically, there was weak but significant relationship (r = 0.353, p = 0.0001) between respondents' perceived benefits and willingness to support exclusive breastfeeding.

 Conclusion: The willingness of male staff to support their female partners or workplace colleagues to achieve exclusive breastfeeding is moderate, despite having a high level of perceived benefits of exclusive breastfeeding; hence there is need for targeted health education interventions for men in order to improve home and workplace support for mothers to achieve exclusive breastfeeding.