January[]
- 1 January
- Freema Agyeman is born.
February[]
- 1 February
- Rachelle Lefevre is born.
- 21 February
- Jennifer Love Hewitt is born.
March[]
- 5 March
- Riki Lindhome is born.
- 9 March
- Oscar Isaac is born.
- 17 March
- Coco is born.
April[]
- 4 April
- Natasha Lyonne is born.
- 12 April
- Claire Danes is born.
May[]
- 6 May
- Brian Slaten is born.
- 10 May
- Nicole Leach is born.
- 28 May
- Monica Keena is born.
June[]
- 2 June
- James Ransone is born.
- 12 June
- Wil Horneff is born.
- 18 June
- Kristina Klebe is born.
- 25 June
- Brandi Burkhardt is born.
August[]
- 11 August
- Lynn A. Freedman is born.
- 25 August
- Karen Goberman is born.
- 30 August
- Marin Ireland is born.
- 31 August
- Yara Martinez is born.
October[]
- 19 October
- Alex Feldman is born.
December[]
- 5 December
- Nick Stahl is born.
- 11 December
- Rider Strong is born.
- 12 December
- Erin Fritch is born.
1979 in the Law & Order universe[]
- 23 November
- Assistant district attorney Kim Greylek is born.
- Undetermined Date
- Marshall Koehler goes missing after being kidnapped by Gregory Brunsen.
| 1978 | Production timeline | 1980 |