Australia should consider establishing an investment fund to help Pacific Islands tackle their "acute" infrastructure deficit, shadow foreign minister Penny Wong says.

In a speech at the United States Studies Centre, Senator Wong urged the Australian Government to consider following the lead of the United States and New Zealand by establishing a regional infrastructure body.

"It was encouraging to see the announcement last November of a memorandum of understanding between the US Government's Overseas Private Investment Corporation and the Japan Bank for International Cooperation to increase investment in infrastructure throughout the region," she told the audience.