What is full form of SEM? All Questions › Category: Digital Marketing › What is full form of SEM? 0 Vote Up Vote Down chetan shidling asked 4 years ago I need short information. 1 Answers 0 Vote Up Vote Down chetan shidling answered 4 years ago The full form of SEM is search engine marketing. It is a paid. You must have to pay for google to rank your website on top of the google.