"It is highly likely we will import again from the National Iranian Oil Company," Pertamina spokeswoman Wianda Pusponegoro told reporters, according to Reuters.
Pertamina plans to import up to 12 cargoes, each of which contains 44,000 tonnes of gas, in 2017, she added.
Pusponegoro further said the deal could be signed this week during Indonesian President Joko Widodo's ongoing visit to Iran.
Widodo, who is in Iranian capital at the head of a delegation, signed four cooperation agreements with Iran during a meeting with his counterpart President Hassan Rouhani on Wednesday.
Moreover, Pusponegoro said the company is also considering buying stakes in two oil and gas blocks in Iran.
"We hope they can agree on Pertamina's proposal," she said, noting that Iran was still studying the matter and that Pertamina aims to complete a deal at the beginning of 2017.
"Our target is for at least 30,000 barrels of oil equivalent per day."