The Lower Merion Library System (LMLS) is the public library system of the township of Lower Merion, in Pennsylvania. It is among the largest public library systems in Pennsylvania. While Lower Merion accounts for 7% of the population of Montgomery County, it represents 20% of its library circulation. The library is ranked in the top 2% of public libraries for circulation per capita.

There are six neighborhood branches throughout the township. The first branch to open was the Ardmore Free Library in 1899, and Belmont Hills is the newest, having opened in 1935. The largest branch is the Ludington Library, with almost 168,000 items in circulation, and the smallest branch is Belmont Hills, with almost 17,000 items available. Lower Merion Library System's governing board is the Board of Directors, which consists of 14 members, some of whom serve ex-officio as commissioners on the Lower Merion Board of Commissioners.

The Lower Merion Library is one of the independent public library systems in Montgomery County. All cardholders can borrow from and utilize library systems at any other library in the Montgomery County library system. In addition, cardholders can request access to Access Pennsylvania which allows for privileges at many other library systems throughout the Commonwealth, including the Free Library of Philadelphia in neighboring Philadelphia. Lower Merion Library System cardholders can also utilize Overdrive, Zinio and Hoopla for e-books, magazines and video-recordings. Approximately 85% of LMLS' funding comes from Lower Merion, with the remainder coming from the State and individual branch libraries funding efforts.

No.	Name	Address	Zip Code	Website	Established
1	Ardmore	108 Ardmore Ave	19003	http://www.lmls.org/locations-hours/ardmore-library/	1899
2	Bala Cynwyd	131 Old Lancaster Road	19004	http://www.lmls.org/locations-hours/bala-cynwyd-library/	1915
3	Belmont Hills	120 Mary Watersford Road	19004	http://www.lmls.org/locations-hours/belmont-hills-library/	1935
4	Gladwyne	362 Righters Mill Road	19035	http://www.lmls.org/locations-hours/gladwyne-library/	1931
5	Ludington	5. S. Bryn Mawr Avenue	19010	http://www.lmls.org/locations-hours/ludington-library/	1916
6	Penn Wynne	130 Overbrook Parkway	19096	http://www.lmls.org/locations-hours/penn-wynne-library/	1929

• 
  Ardmore Library
• 
  Bala Cynwyd Library
• 
  Belmont Hills Library
• 
  Gladwyne Library
• 
  Penn Wynne Library

• Official website

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