Macleod has missed the last two matches with a hamstring injury and is one of six personnel changes from the side that took the field against Ulster in Belfast last time out.
Wales internationals Ellis Mee, Eddie James, Taine Plumtree, Kemsley Mathias and Henry Thomas are recalled to the match-day 23, although Blair Murray misses out with a calf issue.
Mee slots into a back-three alongside Ioan Nicholas and Macs Page, who were both try-scorers at the Kingspan.
James and Joe Roberts reunite in midfield, whilst Johnny Williams is absent because of a calf injury picked up in training this week.
Ioan Lloyd and Gareth Davies continue at half-back.
In the front row, Marnus van der Merwe is recalled at hooker and packs down between Alec Hepburn and Sam Wainwright.
In an unchanged second row Scottish international Alex Craig partners Tongan Sam Lousi.
With Macleod back as captain, he is part of a back row with Vaea Fifita and Plumtree, who are both recalled to the starting XV.
Head coach Dwayne Peel said:
“You look at how tight the league is at the moment and it is clear it is going to go down to the wire in terms of the play-off race.
“Our form here in Llanelli has been excellent this season with the supporters really getting behind the boys. We are going to need that again against a Stormers side who have come here with pretty much a full crew with a couple of Springboks back from injury.”
Scarlets XV to face DHL Stormers:
Ioan Nicholas, Macs Page, Joe Roberts, Eddie James, Ellis Mee, Ioan Lloyd, Gareth Davies
Alec Hepburn, Marnus van der Merwe, Sam Wainwright, Alex Craig, Sam Lousi, Vaea Fifita, Josh Macleod (captain), Taine Plumtree.
Replacements:
Ryan Elias, Kemsley Mathias, Henry Thomas, Jarrod Taylor, Dan Davis, Archie Hughes,
Charlie Titcombe, Tomi Lewis.
[Lead image: Scarlets Rugby]
