German Technical Cooperation Bangladesh (GTZ BD) provides technical expertise and assistance to several priority areas of Bangladesh, on behalf of the German Ministry of Economic Cooperation and Development (BMZ). While doing so, Effective Management of GTZ Dhaka has always been a primacy of GTZ Bangladesh, to achieve its ultimate goal of being more productive and effective. As an integral part of this Effective Management, Team Effectiveness setting of GTZ Dhaka is well integrated by design, given a German corporate culture by default. In this relation, the present study explores the factors contributing to the Team efficacy of GTZ Dhaka and focuses upon the existing built-in models facilitating Team Effectiveness of GTZ Dhaka that is the umbrella of all GTZ projects and services in Bangladesh. [As of January 2011, GTZ is Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ)]