I've already seen the tsp tag on the site but not traveling-salesman. I think the least is to synonymize them. Similarly, we can do that for vrp and vehicle-routing.
Please add an answer below supporting which should be the master: tsp, traveling-salesman?
P.S: Since at the time of posting this, there is still no conclusion on whether to include the word "problem" for classical problems as mentioned here, I left them out of my tag suggestions.
bppas it's not as widely-used, IMO, as the other abbreviations. However, you can create a new post and suggest that and let the community decide. $\endgroup$