Library 2.0 may be well-established for librarians in developed countries but is newer in developing countries. This pilot study explores the awareness of Library 2.0 among academic librarians in selected universities in Southwest Nigeria. This was a cross-sectional study which used a structured self- administered questionnaire to obtain information on awareness of library 2.0, perceived support, and willingness to participate in the ongoing global discussion among 31 participants randomly selected from a total of 33 universities owned by federal and state governments and private organizations with a total of about 200 qualified academic librarians. A majority (80.6 percent) hold a master degree in librarianship and bearly half have at least 10 years of relevant working experience. Awareness of the concept was generally very low with a mean of 3.9 (SD=1.94) on a 12-point scale and a mean positive attitudinal disposition of 10.39 (SD=4.26) on an 18-point scale, a fairly high perceived support (mean=14.23; SD=2.86) for Library 2.0 on an 18-point scale. No participants had attended any workshop or seminar on Library 2.0.This pilot study demonstrates an urgent need to reposition these professionals into the stream of contemporary events in the ongoing library 2.0 global discussion.