Port Moresby International School (PMIS) is a private international school in Port Moresby, Papua New Guinea providing education from year 7 through 12 to both the Papua New Guinean and expatriate community. The school is one of the 20 establishments managed by the International Education Agency of Papua New Guinea. The school holds an annual "UN Concert", a fête for international culture where students wear costumes and perform cultural works.

PMIS's curriculum is based on the following courses:

External examinations are conducted in Grades 8, 10 & 12 for certification.

Externally moderated courses at Grades 11–12. The ACT Senior Secondary Certificate is issued in year 12 and students have the opportunity to gain an Australian Tertiary Admission Rank (ATAR) which enables entrance into Australian universities.

The IGCSE has external examinations that are internationally accredited and externally moderated by University of Cambridge International Examinations. Examinations occur in Grades 8 & 10.

The IB Diploma Programme is a two-year programme offered at the Grade 11 and 12 level. It has external examinations and gives students the opportunity to gain university entrance around the world.