Introduction: Occupational therapists have been developing various handwriting intervention that has fundamental occupational goals with known validity to guide professional practice in the treatment of children with handwriting difficulties. This study aimed to explore the development and content validation of a developed handwriting intervention programme for children with handwriting difficulties. Methods: This study employed a combination of qualitative and quantitative methodology based on the sequential exploratory design in two main stages. The first stage is the focus group discussion and followed by a validation procedure using face and content validity scored by the expert reviewers. A total of thirteen experts participated in this study. Results: The findings were analyzed thematically according to physical appearance, language used, and content in the developed programme. The face and content validity report a convincing value, ranging from 0.99 to 1.00 of S-CVI values on four aspects, relevancy, clarity, simplicity, and ambiguity in the developed programme. Conclusion: This study provided preliminary approval for the development and validation of a handwriting intervention programme for children with handwriting difficulties to support the demand in the Malaysian school curriculum.