Philadelphia Seaplane Base

{{Use American English|date=March 2025}}

{{Infobox airport

| name = Philadelphia Seaplane Base
{{small|Chandler Field}}

| image =

| FAA = 9N2

| IATA = PSQ

| ICAO =

| type = Public

| owner = Township of Tinicum

| operator =

| location = Essington, Pennsylvania

| elevation-m = 0

| elevation-f = 0

| coordinates = {{coord|39|51|38|N|75|18|00|W|region:US-PA_type:airport_scale:10000|display=inline,title}}

| website = {{URL|http://phillyseaplanebase.com/}}

| pushpin_map = USA Pennsylvania#USA

| pushpin_label_position = bottom

| pushpin_label = PSQ

| pushpin_mapsize = 250

| pushpin_map_caption = Location of Philadelphia Seaplane Base

| r1-number = 11/29

| r1-length-m = 2,774

| r1-length-f = 9,100

| r1-surface = Water

| stat-year = 2008

| stat1-header = Aircraft operations

| stat1-data = 4,500

| footnotes = Source: Federal Aviation Administration{{FAA-airport|ID=9N2|use=PU|own=PU|site=20366.*C}}. Federal Aviation Administration. Effective 8 April 2010.

}}

Philadelphia Seaplane Base {{airport codes|PSQ{{GCM|PSQ}}||9N2}} is a township-owned, public-use seaplane base located one nautical mile (1.85 km) south of the central business district of Essington, a community in Tinicum Township, Delaware County, Pennsylvania, United States. It is situated on the Delaware River, west of Philadelphia International Airport.

Originally, the facility operated during World War I as Chandler Field.