As you Asking for the names of the Top B Schools or Universities f MBA of Singapore the names are given below :

Waseda University - Waseda Business School (WBS)
INSEAD - Asia Campus
Nanyang Technological University (NTU) - Nanyang Business School
Universiti Malaya - University of Malaya Graduate School of Business (UMGSB)
Nagoya University of Commerce & Business (NUCB)
Singapore Management University (SMU)
HKU The University of Hong Kong
HKUST Hong Kong University of Science and Technology Business School
Indian School of Business Management and Administration (ISBM)
James Cook University (JCU) Singapore
CEIBS China Europe International Business School - Shanghai Campus
Fudan University - School of Management
Asian University of Bangladesh (AUB)
Sungkyukwan University (SKK) - Graduate School of Business
McGill University - Japan
Asian Institute of Management (AIM)
Universiti Teknologi Malaysia (UTM) - International Business School
University of Colombo
Seoul National University (SNU) - Graduate School of Business
Keio University - Keio Business School (KBS)
ISB Indian School of Business
Korea University Business School (KUBS)
Graduate School of Management - Kyoto University
Universiti Sains Malaysia
Universiti Kebangsaan Malaysia (UKM) - Graduate School of Business