Green marketing, also known as environmental or sustainable marketing, has emerged as a pivotal strategy for businesses in response to growing environmental concerns. This paper delves into the concept and key principles of green marketing and examines the factors influencing awareness of consumers and their purchase behavior of green marketing products in selected areas of Delhi-NCR region. The study has used a survey method through developing a questionnaire and analysed the results through descriptive statistics, percentage analysis and Chi-Square tests. The results from Chi-Square tests and Fisher Exact Tests revealed that there is significant association of gender, age and occupation with the awareness about Green marketing. Also, it is found that willingness to pay high prices for buying Green products varies with gender significantly. A majority of respondents (88%) were found to be aware about Green marketing and more than 91% about Green products. The most popular source of information is social media for 46.8% respondents. More than half of the sample were found to be unwilling to pay high prices for Green products despite being aware of their advantages. So there should be efforts by the marketers to provide Green products at affordable prices.