To apply any algorithm selection of a proper data structure is very significant. An explicit operation might be performed with a data structure in a smaller time however it might need a very large time in some other data structure. E.g. to access ith element in a set might need constant time if we are employing arrays however the needed time becomes a polynomial in case of linked list. Consequently the selection of data structure should be done keeping in mind type of operation to be performed and architecture available. In this segment we will introduce a number of data structures generally used in parallel programming.