Ph.D. Sabbatical leave

The aim of JSPS RONPAKU (Dissertation PhD) Program is to provide tutorial and financial support for promising researchers in Asia and Africa or other specified countries who wish to obtain their Ph.D. degrees from Japanese universities through the submission of a dissertation without matriculating a doctoral course. This program is implemented in cooperation with JSPSs overseas nominating organizations in Asia and Africa.
Link for JSPS RONPAKU (Dissertation PhD) Program: https://www.jsps.go.jp/english/e-ronpaku/applicationforms.html

2. Ph.D. sabbatical leave opportunities in NIMS (International Cooperative Graduate Program)

In this program, overseas doctorial students from globally renowned graduate schools are accepted as NIMS visiting scientist (trainee) and undergo training by NIMS researchers on research. The president of NIMS signs the documents concerned.
Link for more information: http://www.nims.go.jp/eng/collaboration/institution/joint-graduate.html

3. Ph.D. sabbatical leave opportunities in Riken (International Program Associate)

An International Program Associate (IPA) is a non-Japanese doctoral candidate attending a Japanese or overseas graduate school participating in RIKENs joint graduate school program. IPAs conduct research at RIKEN under the supervision of RIKEN scientists as part of work toward obtaining a PhD. RIKENs joint graduate school program is based on agreements with a number of Japanese and overseas universities and aims to identify and foster talented young scientists capable of contributing to the advancement of science for the global community.,br /> Calls for applications are issued in April and in October each year. Application documents must be submitted following the instructions in the call for applications.
Note: IPAs may select his/her starting date from October to March of the following year, or from April to September.
The basic sequence of procedures for becoming an IPA from outside of Japan is as follows:

Directly contact RIKENs researchers of interest

RIKENs researchers willing to accept the candidate contacts RPAS

Apply for IPA at biannual Call of application (in April and October)

Screening

After gaining internal approval, become an IPA

Link for IPA application information: http://www.riken.jp/en/careers/programs/ipa/