| 1 | PPG | Phoenix Air Transport, Inc. | Callsign: Papago, | USA | AVCODES |
| 2 | PPG | Phoenix Air Transport | | | ICAO1 |
| 3 | PPG | PITTSBURGH PLATE GLASS (OHIO) | | | PWRC |
| 4 | PPG | PPG Polifarb Cieszyn S.A. | | PL | VKM |
| 5 | PPGB | PAPER TRANSPORT OF GREEN BAY INC | | | SCAC4 |
| 6 | PPGF | POLAR TRANSPORT INC | | | SCAC4 |
| 7 | PPGI | P P G INDUSTRIES INC | | | SCAC3 |
| 8 | PPGI | PRIMA EXPRESS INC | | | SCAC4 |
| 9 | PPGK | POPE, G K TRUCKING INC | | | SCAC4 |
| 10 | PPGP | PENPAC GROUP INC | | | SCAC3 |
| 11 | PPGU | ALTIVIA SPECIALTY CHEMICALS | | USA | BIC |
| 12 | PPGU | Axiall Corporation | | | RSRV |
| 13 | PPGU | PPG INDUSTRIES INC | | | SCAC4 |
| 14 | PPGWW | PPG Deco Polska Sp. Z o.o. | | PL | VKM |
| 15 | PPGX | PPG Industries, Inc. | added 4/1968; 4/1970-7/2005 | | NAKINA |
| 16 | PPGX | Pittsburgh Plate Glass Co. | added 4/1961; 4/1961-10/1966; eliminated 4/1968 | | NAKINA |
| 17 | PPGX | Columbia-Southern Chemical Corp. | 1/1952-10/1957; eliminated 4/1961 | | NAKINA |
| 18 | PPGX | Pittsburgh Plate Glass Co., Columbia Chemical Div. | 7/1923; 1/1941-1/1950 | | NAKINA |
| 19 | PPGX | Columbia-Southern Chemical Corp. | 1/52-10/57; eliminated 4/61 | | NRHS |
| 20 | PPGX | Pittsburgh Plate Glass Co. | added 4/61; 4/61-10/66; eliminated 4/68 | | NRHS |
| 21 | PPGX | PPG Industries, Inc. | added 4/68; 4/70-7/2000 | | NRHS |
| 22 | PPGX | PPG INDUSTRIES, INC. {PITTSBURGH PLATE GLASS CO., COLUMBIA-SOUTHERN CHEMICAL DIV.] | | | PWRC |
| 23 | PPGX | PPG Industries | | | RSRV |
| 24 | PPGX | PITTSBURGH PLATE GLASS CO | | | SCAC3 |
| 25 | PPGX | Pittsburgh Plate Glass Co. | | USA | TRAFFIC |
| 26 | PPGZ | PITTSBURGH PLATE GLASS | | | PWRC |
