Powell, 27, a 15-time Grand Prix medallist, won the Abu Dhabi Grand Slam in October to take over the -78kg category and has now made the shortlist of six athletes.
Voting -- online and by phone -- opens at at 08:00 GMT on Monday, 27 November and will close on 18:00 GMT on Saturday, 2 December.
The winner will be revealed on Monday 4 December 2017 after a public vote.
Click hereto vote online
Or call 09011 98 7005 to vote for Natalie Powell. Calls cost 10p plus your network's access charge. Calls from a mobile may cost considerably more than from a landline.
Watch Powell in action at the Tokyo Judo Grand Slam on 3 November at www.ijf.org
Click here for more information on BBC Wales Sports Personality.