Certified Lineage Specialist (CLS)
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CLS is the abbreviation for Certified Lineage Specialist (CLS).
The postnominal of CLS was administered by the Board for Certification of Genealogists®. Currently, the Board only awards certifications as a Certified Genealogist (CG) and Certified Genealogical Lecturer (CGL).
Along with the CLS, the Board previously offered credentials of Certified Genealogical Records Specialist (CGRS), Certified American Indian Lineage Specialist (CAILS), and Certified Genealogical Instructor (CGI). These credentials are no longer current, but you might see them in older publications.