Bangladesh
Bangladeshi-Japanese relations were established in February 1972. Japan is Bangladesh's 11th-largest export market; imports from Bangladesh make up 26% of all Japanese imports from the least developed countries, second only to those from Cambodia. Common imports from Bangladesh to Japan include leather goods, ready-made garments, and shrimp. By 2004, Japan had become Bangladesh's fourth-largest source of foreign direct investment, behind the United States, United Kingdom, and Malaysia. Japan's political goals in its relationship with Bangladesh include gaining support for their bid to join the United Nations Security Council, and securing markets for their finished goods. Japan is a significant source of development aid to Bangladesh.

India
Throughout history, bilateral foreign relations between Japan and India have generally been friendly and strong. In December 2006, Prime Minister Singh's visit to Japan culminated in the signing of the "Joint Statement Towards Japan-India Strategic and Global Partnership."

According to Prime Minister Shinzo Abe's arc of freedom theory, it is in Japan's interests to develop closer ties with India, world's most populous democracy, while its relations with China remain chilly. To this end, Japan has funded many infrastructure projects in India, most notably in New Delhi's metro subway system and Maruti.

Indian applicants have been welcomed in 2006/7 to the JET Programme, starting with just one slot available in 2006 and 41 in 2007.

India and Japan signed a security cooperation agreement in which both will hold military exercises, police the Indian Ocean and conduct military-to-military exchanges on fighting terrorism, making India one of only three countries, the other two being the United States and Australia, with which Japan has such a security pact.

Nepal
- Japan has an embassy in Kathmandu.
- Nepal has an embassy in Tokyo.

Pakistan
- There has been a regular exchange of high level visits between the two countries.
- The 50th anniversary of the establishment of diplomatic relations, jointly celebrated by the two countries in 2002, was a significant landmark in the history of this friendship.
- There are at least 10,000 Pakistanis residing in Japan.

Sri Lanka
- Japan has an embassy in Colombo.
- Sri Lanka has an embassy in Tokyo.