In　this　correspondence,　we　develop　a　novel　frequency　synchronization　scheme　for　multiuser　orthogonal　frequency　division　multiplexing　(OFDM)　uplink　with　massive　uniform　linear　array　(ULA)　at　base　station　(BS).　With　proper　user　scheduling　strategy,　the　directions　of　arrival　(DOAs)　of　all　users　are　considered　to　be　disjunct.　Our　proposed　method　performs　multiuser　interference　(MUI)　cancellation　through　beamforming　network,　after　which　the　multiuser　OFDM　uplink　model　can　be　decomposed　into　a　set　of　parallel　single　user　models.　Then,　carrier　frequency　offset　(CFO)　estimation　for　each　user　can　be　performed　individually.　The　beamforming　network　is　further　optimized　to　minimize　the　mean　square　error　(MSE)　of　the　CFO　estimation.　The　provided　numerical　results　validate　the　proposed　studies.　©　1967-2012　IEEE.