Nearly 5 years since Quaternion BP support was requested by multiple people

[anonymous_user_d56cb57d]

See this post with Epic employees promising new additions to the BP scripting interface for Quaternions in 2014: https://forums.unrealengine.com/unreal-engine/feedback-for-epic/7668-quaternion-in-blueprint

If this isn’t on the roadmap please treat this post as a feature request to put it on it.

[Jamie_Dale]

4.22 has exposed a lot more math support, including for Quaternions. Feel free to take a look at the preview.