| Season 1 (Episode Guide) | ||
| S-1 | ||
| Season 1 | (Add Episode) |
Episode # ![]() |
Airdate | Title | Rating | |
| 1 | 1x01 | 18/Sep/1989 | Alien Nation: The TV Movie (1) | 6 |
| 2 | 1x02 | 18/Sep/1989 | Alien Nation: The TV Movie (2) | N/A |
| 3 | 1x03 | 25/Sep/1989 | Fountain of Youth | N/A |
| 4 | 1x04 | 02/Oct/1989 | Little Lost Lamb | N/A |
| 5 | 1x05 | 09/Oct/1989 | Fifteen with Wanda | N/A |
| 6 | 1x06 | 16/Oct/1989 | The Takeover | N/A |
| 7 | 1x07 | 23/Oct/1989 | The First Cigar | N/A |
| 8 | 1x08 | 30/Oct/1989 | Night of the Screams | N/A |
| 9 | 1x09 | 06/Nov/1989 | Contact | N/A |
| 10 | 1x10 | 13/Nov/1989 | Three to Tango | N/A |
| 11 | 1x11 | 20/Nov/1989 | The Game | N/A |
| 12 | 1x12 | 27/Nov/1989 | Chains of Love | N/A |
| 13 | 1x13 | 18/Dec/1989 | The Red Room | N/A |
| 14 | 1x14 | 15/Jan/1990 | The Spirit of '95 | N/A |
| 15 | 1x15 | 29/Jan/1990 | Generation to Generation | N/A |
| 16 | 1x16 | 05/Feb/1990 | Eyewitness News | N/A |
| 17 | 1x17 | 12/Feb/1990 | Partners | N/A |
| 18 | 1x18 | 19/Feb/1990 | Real Men | N/A |
| 19 | 1x19 | 26/Feb/1990 | Crossing the Line | N/A |
| 20 | 1x20 | 12/Mar/1990 | Rebirth | N/A |
| 21 | 1x21 | 09/Apr/1990 | Gimmee, Gimmee | N/A |
| 22 | 1x22 | 30/Apr/1990 | The Touch | N/A |
| 23 | 1x23 | 07/May/1990 | Green Eyes | N/A |
| Airdate | Title | Rating |
| 07/Oct/1988 | Alien Nation | N/A |
| 25/Oct/1994 | Alien Nation: Dark Horizon | N/A |
| 10/Oct/1995 | Alien Nation: Body and Soul | N/A |
| 02/Jan/1996 | Alien Nation: Millennium | N/A |
| 12/Nov/1996 | Alien Nation: The Enemy Within | N/A |
| 29/Jul/1997 | Alien Nation: The Udara Legacy | N/A |