This paper presents the current status of space debris modeling and analysis tools being developed in Japan. This paper also introduces briefly an orbital debris evolutionary model in low-Earth orit being developed by Kyushu University in collaboration with JAXA and demonstrates some future projection scenarios. A suite of debris mitigation standard support tools is being developed for use by space system planners for debris risk assessment and determining compliance with JAXA's debris mitigation guidelines. A debris collision risk analysis tool for calculating the collision probability for each part of a space system is also under development. Copyright IAF/IAA. All rights reserved.