Ambophthalmos is a genus of fatheads found in the southwestern Pacific Ocean.

Tikopia is a small and high island in the southwestern Pacific Ocean.

Callionymus sublaevis is a species of dragonet native to the southwestern Pacific Ocean.

New Zealand is a country in the southwestern Pacific Ocean.

Iridoteuthis maoria is a species of bobtail squid native to the southwestern Pacific Ocean.

It is located in the southwestern Pacific Ocean, in a region described since the early 19th century as Melanesia.

It is known from the southwestern Pacific Ocean.

Sepia subplana is a species of cuttlefish native to the southwestern Pacific Ocean.

The name Isaac has also been used for one tropical cyclone in the southwestern Pacific Ocean.

The name Kim has also been used for two tropical cyclones in the southwestern Pacific Ocean.