First innings century-maker Abdullah Shafique and Babar Azam, in his first series since being reappointed as captain, led Pakistan to 2-77 with unbeaten knocks of 24 runs each as the visitors achieved victory shortly after lunch on the fourth day and drew the series 1-1.
Babar knocked off the target by hitting back-to-back sixes against left-arm spinner Jomel Warrican, whose six-wicket haul in the first innings had limited Pakistan's lead to 43 runs.
West Indies won the first Test by by 90 runs at Tarouba before Pakistan spinners Sajid Khan and Ali Usman utilised favourable conditions on a wearing wicket of Queen's Park Oval to ensure Pakistan stay unbeaten in a Test series against the West Indies since 2000.
Pakistan lost the wickets of Imam-ul-Haq, brilliantly snapped up by Justin Greaves in the slips cordon for 9 in Jayden Seales' first over, and Azan Awais was bowled by Shamar Joseph for 18 before Shafique and Babar sealed the win inside four days.
Earlier, West Indies had set up a modest target of 75 runs after they were bowled out for 117 inside half an hour with off-break bowler Sajid (4-32) and left-arm spinner Usman (4-39) sharing eight wickets between them.
Opener Brandon King could not bat in West Indies' second innings due to a back injury sustained on the third day when he ran out Babar with a spectacular direct throw from shot covers.
Resuming on 3-106 with only 60 runs ahead, the resistance of West Indies' tailenders ended quickly with Usman picking up the wickets of Kemar Roach and Joseph.
Greaves, the last recognised batter, played on to seamer Mohammad Ali's delivery back on to his stumps after adding just two runs to his total as he attempted a cross batted shot, but got a big inside edge.
Pakistan's last Test win away from home came against Sri Lanka in 2023 during Babar's first tenure as captain before Shan Masood led the side for nearly three years during which Pakistan lost 3-0 in Australia; 2-0 in South Africa; 2-0 in Bangladesh.
