Implementation of bilateral, regional and multilateral trade agreements has brought down tariffs significantly among RCEP countries. While tariffs have been reduced, comprehensive NTMs data collection by UNCTAD found that a large number of NTMs (24,757) are currently imposed by RCEP members. Unlike tariff, non-tariff measures are more complicated to understand and often being imposed by non-trade officers without considering trade-implication of such measures. To achieve broader and deeper economic integration, especially on trade in goods, among RCEP participating countries, issues of non-tariff measures need to be better understood by policy makers and brought to negotiation table. This thesis, therefore, aims to 1) provide a good picture of non-tariff measures in RCEP participating countries, 2) quantify impact of non-tariff measures on regional trade among them, and 3) seek to identify options in streamlining non-tariff measures to support economic integration of the RCEP.