Purpose – The study of this paper is to know the impact of online advertisement on buyingbehaviour of Uttarakhand consumers. Design/Methodology – We have taken 5 variables (Awareness, Interest, Conviction, Purchase Behaviour, Post Purchase Behaviour) with 23 items to fulfil our research objectives. In total, 300 people filled the questionnaire out of which 280 samples were completed and reliable. Hence the total sample size for the study was 280 who were selected randomly from people of Uttarakhand further, Amos and SPSS software was used to test the validity of the model and test the hypothesis. Findings – The study revealed that there is no significant impact of Awareness, Interest and Post Purchase Behaviour on Purchase Behaviour only Conviction has significant impact on Purchase Behaviour.