It was first launched in India in April this year.
Users of Jio Chat can also get the latest news, content and offers from favourite brands on Jio Chat Channels.
Jio Chat is available in Canada, the US, the UK, the UAE, South Africa, Singapore, Australia, China and India, the company said in a statement.
"We are excited to launch our services in eight other countries apart from India as it will help in boosting our international presence and also let our customers based in India to connect seamlessly with their folks abroad," a company spokesperson said.
Jio Chat also offers HD quality video and audio conferencing along with group chats, file sharing, stickers, location share etc.