The two acts are performing at shows in Belgium, the Netherlands, Ireland, France, and the UK.
Lytle recently confirmed on Twitter that he's back in the studio working on a new Grandaddy record.
Giant Sand are releasing an "exclusive box set" of their catalogue; it's due next Spring on Fire America.
Check out Giant Sand and Lytle's upcoming dates after watching the former's "Transponder" vid.
9 - Botanique, Brussels, Belgium
10 - Paradiso Noord, Amsterdam, Netherlands
11 - Village Underground, London, UK
12 - Sage, Gateshead, UK
13 - Whelans, Dublin, Ireland
14 - Cyprus Avenue, Cork, Ireland
15 - Roisin Dubh, Galway, Ireland
17 - All Saints Church, Brighton, UK
18 - The Lantern, Bristol, UK
19 - Le Trabendo, Paris, France