There are dozens of conferences and organizations that pertain to LIS. Below is a selection that Penn State University Libraries faculty frequently participate in. In no way does this list represent the venues that library employees "should" participate in, nor are they discouraged from getting involved elsewhere.
For links to additional conferences, see Douglas Hasty's Library Conference Planner.
For links to additional associations, see San Jose State University's list of Professional Associations.
Regional and State Conferences:
National and International Conferences:
Regional and State Organizations:
National and International Organizations: