Are there trains going from Hong Kong Airport to Guangzhou?

No direct trains are available for this journey. To travel between, here are the recommended ways:
By coach: many cross-border coaches are from HKIA to GZ from 07:00 to 22:30 every day. These buses have various destinations in GZ. The travel time is 3.5-4 hours and the fare is 250HKD.

By train: take airport shuttle bus no. A21 to Hung Hom in around 70min. At Hung Hom Railway Station, take a through train to GZ East Rail Station in two hours.