The Facebook Fellowship is a global program designed to encourage and support promising doctoral students who are enrolled in a PhD program full-time. 
https://research.fb.com/fellowship/

Topic areas for fellowships:
AI Artificial Intelligence System HW SW Hardware Software Co-Design
Applied Statistics
AR/VR Augmented Reality Virtual Reality and Computer Graphics
AR/VR Future Technologies
AR/VR Human Computer Interaction
AR/VR Human Understanding
AR/VR Perception, Cognition & Action
AR/VR Photonics and Optics
Audio Presence
Augmented Reality Audio
Blockchain and Cryptoeconomics
Computational Social Science
Database Systems
Distributed Systems
Economics and Computation Networking
Privacy and Data Use
Programming Languages
Security and Privacy