This article analyses the Maritime Sector economic grow impact to Lithuania’s economy from a Cluster perspective. The potential competitive Maritime industry Cluster in Lithuania is on interest because Lithuanian Maritime Sector is expanding its connections to the whole European region, going beyond the boundaries of anyone industry sector, is supported by EU Strategic documents, but the steps towards clustering still are tentative and negligible. Assessing the Maritime sector impact on Lithuania's economy, the total economic impact (direct and indirect) was calculated by using the following indicators: number of Employees, Turnover and Value Added at Production Cost (VAPC). The period for the evaluation of the statistical givens trends has been chosen for 5 years, according to Official 2007 – 2011 period statistical givens, provided by Department of Statistics.