This book constitutes the refereed proceedings of the 9th International Conference on Digital Human Modeling and Applications in Health, Safety, Ergonomics, and Risk Management, DHM 2018, held as part of HCI International 2018 in Las Vegas, NV, USA.

HCII 2018 received a total of 4346 submissions, of which 1171 papers and 160 posters were accepted for publication after a careful reviewing process.

The 53 papers presented in this volume were organized in topical sections as follows: Anthropometry, ergonomics and design; Motion modelling and rehabilitation; User diversity and well-being; Nursing and medical applications; Transportation human factors.