Lewis has already spent time at the Holy Blues on loan on two separate occasions this season, scoring four goals in 20 appearances for the club.
Two of those came at the end of February, with Lewis coming off the bench to net a late double as the Holy Blues defeated Ashton United 3-2.
The Scunthorpe academy graduate, who is capable of playing at left-back or in midfield, has made 11 senior appearances for the Iron so far.
Gainsborough will look to return to the Northern Premier League play-off places this weekend when they welcome Warrington Rylands to Northolme.
Photo credit: Scunthorpe United
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