美国国会图书馆控制号（英语：Library of Congress Control Number，简称LCCN）是美国国会图书馆用于图书记录、编码和查询的串行号；每一本书籍都有相对应的控制号。该号码与书籍内容没有丝毫关系，因此请注意不要把它与美国国会图书馆图书分类法（简称LCC）混淆。

The Library of Congress Control Number (LCCN) is a serially based system of numbering cataloging records in the Library of Congress in the United States. It has nothing to do with the contents of any book, and should not be confused with Library of Congress Classification.