Facebook, Instagram, and WhatsApp social media platforms were all down at about 11:30 BST, according to outage website DownDetector.
DownDetector's live outage map showed that users in Europe and Asia were mainly affected.
The outage monitoring site also showed that over 3,000 people reported problems with WhatsApp and more than 7,000 with Instagram.
It comes just a month after Facebook, WhatsApp, and Instagram experienced suffered a major outage.
Each of the three platforms, which are all owned by Facebook, went offline for more than 24 hours.