Telstra is seen as one of Optus's top competitors. Telstra's headquarters is in Melbourne, Victoria, and was founded in 1975. Like Optus, Telstra also works within the Telecommunication Services industry. Telstra generates 290% of Optus's revenue.
Vodafone is one of Optus's top rivals. Vodafone was founded in 1984, and its headquarters is in Berkshire, England. Like Optus, Vodafone also works within the Telecommunication Carriers (Wireless & Wired) field. Vodafone has 89,282 more employees than Optus.
TPG Internet Pty Ltd is Optus's #3 rival. TPG Internet Pty Ltd is a Product/Brand/Service company that was founded in 1986 in North Sydney, New South Wales. Like Optus, TPG Internet Pty Ltd also competes in the Telecommunication Services sector. Compared to Optus, TPG Internet Pty Ltd has 2,224 fewer employees.