There are Check-in counters or Row Check-in at Chiang Mai Airport in total of 59 Rows. These serve for the passengers while checking in for their flights. The details are follows
check in at counter 1-26
check in at counter 27-59 Row 32-35 Thai Airway
In addition, the Airport provides Automatic Self Check-in System nearby 1st floor of Domestic Terminal to serve for many travelers while checking in.