| Name : | A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # All |
| Name | Description |
| Xanthras III [1] | Destination of the Enterprise-D in 2366 [1] |
| Xantoras [2] | Planet visited by the NX-01 Enterprise in 2153. The ship rescued a party of Denobulan geologists who were working there at the time. [2] |
| Xarantine [3] | Home of the Xarantine civilisation. In 2381 Xarantine was one of the Alpha Quadrant planets targeted in the Borg attack. It was badly damaged in the attack. [3] |
| Xenius [4] | Xenius is a planet in a Tychus system. [4] |
| Xerxes VII [5] | Legend says a mythical land called Neinman is found here [5] |
| Xindus [6] | The original homeworld of the Xindi, Xindus was destroyed in a civil war between the various subspecies. The Xindi-Avians were rendered extinct in the destruction, prompting the creation of the Xindi ruling council. [7] The NX-01 visited the remains of Xindus in 2153. [8] |
| Name : | A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # All |
| Canon source | Backstage source | Novel source | DITL speculation |
| # | Series | Season | Source | Comment |
| 1 | TNG | 3 | Menage a Troi | |
| 2 | ENT | 2 | The Breach | |
| 3 | Star Trek : Destiny, Book 3 - Lost Souls | |||
| 4 | SNW | 3 | What is Starfleet? | |
| 5 | TNG | 1 | When the Bough Breaks | |
| 6 | ENT | 3 | The Council | |
| 7 | Various Enterprise episodes | |||
| 8 | ENT | 3 | The Xindi |
| Series : | TNG Season 3 |
| Episode : | Menage a Troi |
| Series : | ENT Season 2 |
| Episode : | The Breach |
| Novel : | Star Trek : Destiny, Book 3 - Lost Souls |
| Series : | SNW Season 3 |
| Episode : | What is Starfleet? |
| Series : | TNG Season 1 |
| Episode : | When the Bough Breaks |
| Series : | ENT Season 3 |
| Episode : | The Council |
| Series : | ENT Season |
| Episode : | Various Enterprise episodes |
| Series : | ENT Season 3 |
| Episode : | The Xindi |
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