| T.A.A. (Trans-Australia Airways) | Coastal Radio | Transmitting messages from T.A.A. aircraft. |
| Telefunken | Coastal Radio | Argument over the equipping of ships and stations with Marconi or Telefunken equipment. |
| Telegram label | Australia | Label for closing a telegram delivery form - very rare use. |
| Telegraph Construction and Maintenance Company. | Eastern Extension Cable laying Company | Contracted to lay the Pacific Cable in 1901. |
| Telegraph Operators | Employment | Repetitive Strain Injuries. |
| Queensland | Operators forced to advance their own money to pay for Collect Telegrams and errors. | |
| Telegraph Operators - mail | New South Wales | Kiama (17 February 1864). |
| Balranald from Echuca (4 Nov 1872). | ||
| Tasmania | Green Ponds | |
| South Australia | Books being ordered from the Telegraph Office at Blanche Town. | |
| Telegraph poles | Western Australia | The erection of a solitary pole at Geraldton. |
| Western Australia | Instances when telegraph poles and lines were relied on in attempts to save lives. | |
| Western Australia | Digging his own grave near the telegraph line from Dundas to Balladonia. | |
| New South Wales | Using trees on private land to make telegraph poles. | |
| Telegraph stamps | New South Wales | Set of 8 stamps issued in 1871. |
| Western Australia | 1d bistre and 6d lilac. | |
| Australia (Interim period) | Red "stamp" with no denomination used to seal forms of Western Australia and Victoria. | |
| Foreign | Examples of telegraph stamps used in the late 1880s. | |
| Telegraphic Money Orders | New South Wales. | Establishment and transfer |
| Telehealth conference | U.S.A. | Possibly the first Telehealth Conference. |
| Telekiss | Victoria | Using the telegraph/telephone to send a kiss. |
| Telephone | Tasmania | First call in the southern hemisphere - Campbelltown. |
| Victoria | 1878 trial of a telephone in Beechworth. | |
| Unknown | Sending a kiss by telephone - the Telekiss. | |
| Tests, Selection | Commonwealth | Telegraph Messengers - you are dared |
| Theatre | Victoria | Letter sent by Dame Nellie Melba to Rt. Hon. Billy Hughes. |
| Time - Standard time and daylight saving. | All colonies | Adoption of standard time statutes using telegraphs. |
| Time - transmitting time signals. | Coastal Radio stations. | |
| Time - notification by flag, time balls and canons. |
Australia | Description of the options. |
| Albury, NSW | The orgaisation under Mr. Kraegen | |
| Victoria - Williamstown | Time signal given by dropping a black ball. | |
| Titanic | Coastal Radio | Changes to the distress call sent by ships, |
| Todd, Charles. | South Australia | Brief biographical summary. |
| Transit forms | Methods used to repeat a telegram from one station to another towards a destination. | |
| Turkeys | Turkeys and telegraph lines |
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