This reference information is provided as a courtesy by the NPS Office of Legislative and Congressional Affairs. If you have feedback or corrections to offer, please e-mail us.
Park Unit Abbreviations
Some words in the National Park System Unit column of the table above are abbreviated. Those abbreviations are defined below.
- IHS
- International Historic Site
- NB
- National Battlefield
- NBP
- National Battlefield Park
- NBS
- National Battlefield Site
- NHP
- National Historical Park
- NHP & PRES
- National Historical Park & Preserve
- NHR
- National Historic Reserve
- NHS
- National Historic Site
- NHT
- National Historic Trail
- NL
- National Lakeshore
- NM
- National Monument
- NM & PRES
- National Monument and Preserve
- NMEM
- National Memorial
- NMP
- National Military Park
- NNL
- National Natural Landmark
- NP
- National Park
- NPRES
- National Preserve
- NP & NPRES
- National Park and Preserve
- NR
- National River
- NRA
- National Recreation Area
- NRES
- National Reserve
- NS
- National Seashore
- NSR
- National Scenic River/Riverway
- NS & RR
- National Scenic & Recreational River
- NST
- National Scenic Trail
- PKWY
- Parkway
- S & RR
- Scenic & Recreational River
- W & SR
- Wild & Scenic River
Last updated: February 13, 2025