I found these contact details on a Website. No Idea if they are still up-to-date.

Chiang Mai Tourist Police
Chiang Mai-Lamphun Rd.,
Tel: +66 (0)5 324 8130, +66 (0)5 324 8974; Fax: +66 (0)5 324 8974

Tourist Police: Airport Office
60 Moo 3 Airport Rd
Tel: +66 (0)5 392 2191, +66 (0)5 327 0222 Ext 191

I know there is a nationwide number, 1155 but I thought it might be easier to explain to a local officer where you are if you need one. It would also probably make sense to call the nearest office in an emergency. Google lists one office as located on the east side of the river close to the end of Loi Kroh Road, but I've learned not to trust Google Maps for this sort of information.

Just call the numbers you have and inquire if you have a question. Do you have a question?

Tourist Police station is about 1 km west past the zoo on the "north side" of Huey Kaew Rd.

The airport sub-station is in the airport building between the international and the domestic terminals.

just do it

In the news just yesterday:

Thais will soon dial 911 as universal emergency number

http://www.thaivisa.com/forum/topic/840525-thais-will-soon-dial-911-as-universal-emergency-number/?hl=+911

Just call the numbers you have and inquire if you have a question. Do you have a question?

I almost needed them recently and it got me thinking I should have up to date contact details on. When you actually need them is not a good time to go looking for their details. I might just call some of the numbers to see if they are correct.

The only time I ever needed them a few years ago, I called about 12:30 at night and called all the numbers listed. The phone rang and rang and no one answered any of the numbers. Finally after 5 or 6 calls a guy answered one of the numbers, sounded like I had woken him up. I told him what the problem was and he just said "Arai khrup?" and he hung up on me.

Complete waste of time. Don't bother with them.