Well, in general, yes. BUT, itís best to check the Installation Instructions AND the Warranty of the actual product youíre buying. I only say this because you may be referring to Engineered glue-down flooring and I may be referring to ĺĒ Solid flooring. Soooo, itís always best to check w/the information thatís provided by the mfgr. WITH the product in question.
BUT, just for grins, hereís whatís generally accepted for ĺĒ Solid hardwood flooring (but again, check w/the mfgr.):
Plywood: Must be minimum APA grade rated sheathing or CDX.
Oriented Strand Board (OSB): Must be PS2 rated installed sealed side down. Do Not install (the hardwood flooring) over particleboard, wafer-board, pressed wood or fiber board.