Optus Australia is owned by the Singaporean telecommunications company Singtel (Singapore Telecommunications Limited), which holds Optus as a wholly owned subsidiary.

Who owns Optus Australia?

  • Optus (legally Singtel Optus Pty Limited) is the second‑largest telecom company in Australia.
  • It is a wholly owned subsidiary of Singtel, a major Singapore-based telecoms group.
  • Singtel itself is majority owned by Temasek Holdings, the Singapore government’s sovereign wealth investment company, which gives the Singapore state significant indirect influence over Optus.

In practical terms, that means:

  • Ultimate corporate control of Optus sits with Singtel’s board and shareholders in Singapore.
  • At the everyday level in Australia, Optus is run by its local executive team and board under Australian law and regulation, but strategic direction and capital decisions align with Singtel’s group strategy.

Quick timeline snapshot

  • 1990s–2001: Optus evolved from earlier entities (including Cable & Wireless Optus).
  • 2001: Singtel (via Singtel Australia Investment) acquired 100% of Cable & Wireless Optus shares, creating Singtel Optus as a fully owned unit.
  • 2000s–2020s: Optus has remained a wholly owned Singtel subsidiary, growing into Australia’s second‑largest telco by customers and mobile network size.

Forum / “trending topic” angle

Optus regularly becomes a hot forum topic in Australia, especially around major outages or data breaches, which often leads people to ask who actually “pulls the strings.”

A common theme in discussions:

“Why is a key Australian telecom so heavily controlled by an overseas parent company?”

From a governance and consumer perspective, the key points usually raised are:

  • Foreign ownership: Optus is foreign‑owned via Singtel and ultimately linked to the Singapore state through Temasek.
  • Regulation: Despite this, Optus must still comply with Australian regulators and laws for telecoms, privacy, and national security.

Fast FAQ

  • Who owns Optus Australia now?
    Singtel (Singapore Telecommunications Limited) – Optus is a wholly owned Singtel subsidiary.
  • Is Optus Australian or foreign owned?
    It operates as an Australian company but is foreign owned, via its Singapore- based parent Singtel.
  • Is the Singapore government involved?
    Yes, indirectly; Temasek Holdings, owned by the Singapore government, is the majority shareholder in Singtel.

Information gathered from public forums or data available on the internet and portrayed here.