Christine Marie Janis is a British palaeontologist who specialises in mammals.

As well as a large scientific publication list, Janis has contributed widely to textbooks and popular articles.

[7] Her work on the evolution of horns in ungulates won her the Simpson Prize in 1985.

She has produced seminal works on the relationships between the lengths of limb bones in running mammals and their locomotion.

[13][14] Among Janis's publications are the co-authored textbooks Evolution of Tertiary Mammals of North America.