Harmful masculine norms, attitudes, and behaviours are considered the cause of most cases of gender-based violence against women and girls in most parts of the world. This premise applies to the patriarchal society of Sri Lanka as well. Regarding various policy-level efforts made to reduce the frequency of gender-based violence in Sri Lanka, this paper explores the efficacy of adapting a cross-cultural evidence-based approach to gender relations tried under the Parivartan programme in India in an effort to improve masculinity-based gender norms in Sri Lanka. The programme’s content and consensual validities are assessed by using the Delbecq technique which involves experts from a variety of relevant fields. At the onset of the programme, each expert independently rates the relevant concepts and teaching techniques that are generally used by cricket coaches on male cricketers of 12-14 years. Towards the end, after a group discussion by experts, a second rating is made of the same concepts and teaching techniques. The two ratings are compared, and the programme is revised to suit Sri Lankan society. The Sri Lankan experience of the cross-cultural evidence-based approach to gender relations inspired by the Parivartan programme in India shows satisfactory content and consensual validities. Therefore, this paper argues that the Delbecq technique is a useful tool to devise in improving masculinity-based gender norms in the society of Sri Lanka.