The Social networking sites play a major role in promoting library services and products to its user community. In this Covid-19 Pandemic and lockdown period, physical communication was locked and online web communication technology proved a powerful tool to bridge the gap between the library and users. The users were unable to reach the libraries during this pandemic period. The librarians used social networking tools to provide information during this pandemic period. The libraries provided a variety of services to its user community. The purpose of this paper is to show how effectively the libraries used Social Networking Sites for marketing & promoting the library and information products & services to their users during this pandemic and lockdown period. A structured online questionnaire was used for data collection. The targeted population was academic librarians working in colleges in Goa, India. From the study, it was found that Social networking sites play a major role in marketing and promoting library and information products and services during this pandemic period. Maximum librarians are using the Library website, Facebook and WhatsApp tool for marketing and promoting the library services and products to reach their users.