Christine Liana Cleghorn, known as Cristina Cleghorn, is a New Zealand public health and nutrition researcher, and as of 2023 is an academic at the University of Otago in the Department of Public Health.

[2][3] She then joined the Department of Public Health at the University of Otago as a nutrition researcher.

She has studied the greenhouse gas emissions of New Zealand dietary interventions, and modelled the effect of replacing meat with alternative protein sources.

[4] She leads a project on a sustainable diet for New Zealand health and the climate, funded by Healthier Lives National Science Challenge.

[5] Her work on the quantification of greenhouse gases began with the Burden of Disease Epidemiology, Equity and Cost-Effectiveness Programme (BODE3), and continued with the Simulation Health Modelling Network (SiHMNet), where she is a senior research fellow.