| Code | Name | Region |
|---|---|---|
| DETPU | Topchin | BB |
| DETPN | Topen | BY |
| DETPS | Toppenstedt | NI |
| DETMH | Torfmoorholle | BY |
| DETOL | Torfplatz Oldenburg | |
| DETHO | Thyrow | BB |
| DETCV | Tiefenbach | BY |
| DETBL | Tiefenbach (bei Landshut) | BY |
| DETBS | Tiefenbach (sachsen) | SN |
| DETWN | Tiefenbronn | BW |
| DETFO | Tiefenort | TH |
| DETIE | Tiefensee | BB |
| DETRP | Tierhaupten | BW |
| DEB6T | Tieringen | BW |
| DETSU | Tiessau | NI |
| DETSA | Timmendorfer Strand | SH |
| DETIN | Tinnum | SH |
| DETI2 | Tirpersdorf | SN |
| DETDO | Tirschendorf | SN |
| DETIR | Tirschenreuth | BY |
| DETNE | Titisee-neustadt | BW |
| DETTT | Titting | BY |
| DETIG | Tittling | BY |
| DETIT | Tittmoning | BY |
| DETIZ | Titz | NW |
| DEXTS | Theessen | ST |
| DETIB | Theisbergstegen | RP |
| DETLY | Theley | SL |
| DETMA | Themar | TH |
| DETHW | Thermalbad Wiesenbad | SN |
| DETMS | Theuma | SN |
| DETHI | Thiendorf | SN |
| DETHR | Thierhaupten | BY |
| DETIM | Thiersheim | BY |
| DETOY | Tholey | SL |
| DETMB | Thomasburg | NI |
| DE64E | Thomsdorf | SH |
| DETOR | Thorey | TH |
| DERRT | Thornich | RP |
| DETHU | Thune | NI |
| DETHN | Thungen | BY |
| DETGM | Thungersheim | BY |
| DETUI | Thuringen | TH |
| DETYN | Thurnau | BY |
| DETYM | Thyrnau | BY |
| DETEB | Teugn | BY |
| DETNZ | Teunz | BY |
| DE5TP | Teupitz | BB |
| DETSZ | Teuschnitz | BY |
| DETEL | Teutschenthal | ST |