Abstract: Cross-border tourism is a significant element of any country’s tourism industry. This is especially in the developing countries where tourism is a valued source of hard international foreign currency. Throughout the world, domestic tourism is bigger than international tourism. Trans-border tourist traffic in East Africa draws from the regional and international markets. Whereas the majority of regional travelers may not necessarily generate the much desired hard international currencies, their large numbers make them an integral part of local economic activities. An understanding of trans-border traffic flow within the East African Community is necessary for explaining trans-border tourism. The main objective of this study is to analyze trans-border tourist traffic at Gatuna border town.