Social media play a vital role in libraries today. This study aims to explore the capabilities have in social media and its effect on librarians’ efficiency. This article briefly explains the dynamic capabilities of social media that contribute to librarian efficiency. Four capabilities have been identified from the literature review: (i) information processing capability, (ii) relationship capability, (iii) service innovation capability, and (iv) tools capability. Each of the capabilities has its criteria and characteristics. All the capabilities support the libraries to fulfill their user's needs. The dynamic capabilities of social media contributed to librarians’ efficiency in many aspects such as literacy skills, reference, and user services. This article also shared the experience of academic libraries in Western Uttar Pradesh, New Zealand, Ghana, Sri Lanka, and Malaysia in using social media for librarians’ efficiency. This study will contribute to the effectiveness and efficiencies of the librarians in organizing the libraries.