Tbilisi Central Train Station

After an extensive refurbishment, the lower levels are now a shopping mall. Tickets and platforms are on the upper levels. 

International

To Yerevan, Armenia - odd days at 22:20 (arriving 06:55 next morning).
From Yerevan - see Yerevan Train Station.

To Baku, Azerbaijan - daily at 17:30 (arriving 08:10 next morning). 63 GEL/second class.
 

Domestic

Domestic tickets can be purchased online, and a receipt on a smartphone or a computer is valid for travel. 

To Batumi:
Express train - daily at 08:45 (5 hrs 25 mins, 18 GEL for 2nd class).
Night train - odd numbered days at 00:35 (arriving at 06:15).
Return times - see Batumi Train Station.

To Borjomi - daily at 06:45 (arriving at 10:55), and at 16:35 (arriving at 20:45). 2 GEL.
From Borjomi - see Borjomi Park Station.

To Kutaisi - daily at 08:55 (arriving at 14:18). 8 GEL.
From Kutaisi - see Kutaisi I Train Station.

To Mtskheta - daily at 08:55 and 21:45 (25 mins, 1 GEL).
From Mtskheta - see Mtskheta Train Station.

To Gori - daily at 00:35, 08:00, 08:20, 08:45, 18:15, 21:45. (1 hr, 4 GEL).
From Gori - see Gori Train Station. 

* The schedule is as of June 2016, for updated information and other destinations, check the website of the Georgian Railways (external link).