This paper analyzes various international joint operation organization (IJO) structure designs of infrastructure projects in Indonesia. Organization structures of important infrastructure projects are studied. Surveys are conducted to collect primary and secondary data that also include interviews with key persons in each project’s management team. The results show that both integrated and non-integrated joint operation organizations exist in these infrastructure construction projects. The organization structure adopted depends on the type of the project, complexity of the construction, and type of joint operation agreements between partners. Authority distribution in each type of organization structure is also studied. In some cases, a shift in organization structures happened. It is revealed that more complicated construction projects mostly adopt a non-integrated IJO organization where the foreign partners have the responsibility to execute high technology construction parts. The position of General Manager in the two IJO organization types is mostly held by a foreign partner officer.