| Laredo Federal Credit Union | Texas |
| Laredo Fire Department Federal Credit Union | Texas |
| La Salle State Bank | Illinois |
| Las Colinas Federal Credit Union | Texas |
| Lassen County Federal Credit Union | California |
| Last Federal Credit Union | New York |
| Las Vegas UP Employees Federal Credit Union | Nevada |
| Latah Credit Union | Idaho |
| La Terre Federal Credit Union | Louisiana |
| Latimer State Bank | Oklahoma |
| Latino Community Credit Union | North Carolina |
| Latitude 32 Federal Credit Union | South Carolina |
| Latrobe Area Hospital Federal Credit Union | Pennsylvania |
| Latrobe Federal Credit Union | Pennsylvania |
| Latvian Cleveland Credit Union | Ohio |
| Latvian Credit Union | Minnesota |
| Latvian Federal Credit Union | New York |
| Latvian Heritage Federal Credit Union | Michigan |
| Lauderdale County Teachers Credit Union | Alabama |
| Lauhoff Employees Credit Union | Illinois |
| Launch Federal Credit Union | Florida |
| Laura State Bank | Illinois |
| Laurens State Bank | Iowa |
| Lawilifie Credit Union | Louisiana |
| Lawrenceburg Federal Bank | Tennessee |
| Lawrence Memorial Hospital Employee Federal Credit Union | Connecticut |
| Lawson Bank | Missouri |
| Layton State Bank | Wisconsin |
| LBS Financial Credit Union | California |
| LCA Bank Corporation | Utah |
| LCE Federal Credit Union | Ohio |
| LC Municipal Federal Credit Union | Louisiana |
| LCNB National Bank | Ohio |
| LCO Federal Credit Union | Wisconsin |
| LCRA Credit Union | Texas |
| Lea County State Bank | New Mexico |
| Lead Bank | Missouri |
| Leadco Community Credit Union | Missouri |
| Leader Bank | Massachusetts |
| Leaders Credit Union | Tennessee |
| Leahi Federal Credit Union | Hawaii |
| Leatherstocking Region Federal Credit Union | New York |
| Lebanon Federal Credit Union | Pennsylvania |
| Ledyard National Bank | Vermont |
| Lee Bank | Massachusetts |
| Lee Bank & Trust Company | Virginia |
| Leeco Credit Union | Iowa |
| Lee County Bank & Trust | Iowa |
| Lee County Mosquito Control Credit Union | Florida |
| Lee Federal Credit Union | District of Columbia |
| Lefors Federal Credit Union | Texas |
| Legacy Bank | Oklahoma |
| Legacy Bank | Colorado |
| Legacy Bank | Iowa |
| Legacy Bank | Kansas |
| Legacy Bank of Florida | Florida |
| Legacy Bank & Trust Company | Missouri |
| Legacy Community Federal Credit Union | Alabama |
| Legacy Federal Credit Union | Oregon |
| Legacy National Bank | Arkansas |
| Legacy State Bank | Georgia |
| LegacyTexas Bank | Texas |
| Legal Community Credit Union | Colorado |
| Legence Bank | Illinois |
| Legend Bank | Texas |
| Legends Bank | Missouri |
| Legends Bank | Tennessee |
| Lehigh County Employees Federal Credit Union | Pennsylvania |
| Lehigh Valley Credit Union | Iowa |
| Lehigh Valley Educators Credit Union | Pennsylvania |
| Lehigh Valley Federal Credit Union | Pennsylvania |
| Lehrer Interests Credit Union | Texas |
| Leighton State Bank | Iowa |
| Leitchfield Deposit Bank & Trust Company | Kentucky |
| Lena State Bank | Illinois |
| Lenco Credit Union | Michigan |
| Lennox Employees Credit Union | Iowa |
| L.E.O. Credit Union | Ohio |
| Leominster Credit Union | Massachusetts |
| Leominster Employees Federal Credit Union | Massachusetts |
| Leonardville State Bank | Kansas |
| LeRoy Federal Credit Union | New York |
| Lesco Federal Credit Union | Pennsylvania |
| LES Federal Credit Union | Louisiana |
| Letcher County Teachers Credit Union | Kentucky |
| Letourneau Federal Credit Union | Texas |
| Level One Bank | Michigan |
| Lewisburg Banking Company | Kentucky |
| Lewis & Clark Bank | Oregon |
| Lewis Clark Credit Union | Idaho |
| Lewiston Municipal Federal Credit Union | Maine |
| Lewiston Porter Federal Credit Union | New York |
| Lexington Avenue Federal Credit Union | New York |
| Lexington MA Federal Credit Union | Massachusetts |
| Lexington Postal Credit Union | Kentucky |
| Leyden Credit Union | Illinois |
| LG&E Co Credit Union | Kentucky |
| LGE Community Credit Union | Georgia |
| L G & W Federal Credit Union | Tennessee |
| Libbey Federal Credit Union | Ohio |