This book constitutes the refereed proceedings of the 18th IFIP WG 9.4 International Conference on Implications of Information and Digital Technologies for Development, ICT4D 2024, which was held in Cape Town, South Africa, during May 20–22, 2024. The 49 full papers and 4 short papers presented were carefully reviewed and selected from 107 submissions.  They are organized in topical sections as follows:  Part I - Artificial Intelligence, Inequalities, and Human Rights; Digital Inclusion through e-Government; Giving Voice to Marginalised Perspectives in IS Research; Human-Computer Interaction for Ethical Value Exchange and Social Inclusion; ICT Curriculum and Education; ICT in Displacement and Conflict Zones: Ideas, Disconnects, & Innovations; Research in Indigenous African Languages; Smart Collaborations & Crowdsourcing; Technology & Social Justice. Part II - Diverse and Inclusive Digital Transformation; Information and Computer Security; General Track; Philosophical, Theoretical and Methodological Approaches to Researching ICT4D.