Yes, there are several shuttle services that can shuttle hikers for a fee. Some of these are listed in the OHT guidebook
Turner Bend: turnerbend.com
479-667-3641 Western and Central OHT
Hagarville Grocery: hagarvillegrocery@yahoo.com
Mark Hodge 479-885-6330 Central OHT
Sassafras Shuttle: HikeArkansas.com/Sassafras.html
Ron Ferguson 870-446-2910 Central and Eastern OHT
Buffalo River Outfitters: BuffaloRiverOutfitters.com
800-582-2244 Eastern OHT
Cody’s Café
(Fiftysix, AR) 870-757-2270 Sylamore Section OHT