Rashti-Douzi, a branch of crochet work and one of the most distinctive traditional arts of Gilan Province, features a wide variety of motifs and designs unique to this region. Although these motifs originate from the broader tradition of Iranian design, they show strong similarities and affinities with the motifs found in Iranian carpets. Nevertheless, Gilan lacks an independent and recognizable style in carpet weaving; instead, designs from other carpet-producing regions are commonly woven by local weavers and marketed under names unrelated to Gilan. The aim of this study is to classify and introduce the Khata’i motifs of Rashti-Douzi and to conduct a comparative examination of these motifs with those of Iranian carpets, in order to assess the feasibility of using redesigned motifs in developing a new carpet design for Gilan. The main research question is: What are the shared and distinct features between Rashti-Douzi motifs and Iranian carpet motifs, and how can these characteristics be incorporated into innovative carpet designs for Gilan? This research employs a descriptive–analytical method with a comparative and applied design approach. In the first stage, the Khata’i motifs of Rashti-Douzi were identified and categorized through field studies, photographic documentation, and redrawing of selected samples. Then, using purposive sampling of carpets from selected regions, comparable motifs specific to Rashti-Douzi were extracted and examined for their structural and conceptual correspondences. Finally, drawing on the redesigned single motifs and structural patterns of Rashti-Douzi, a new carpet design for Gilan was developed. The findings indicate that by preserving the structural principles of Iranian carpet design, Khata’i motifs from Rashti-Douzi can be integrated in a way that results in a localized, distinctive design suitable to be presented under the name of Gilan—thus addressing the long-standing absence of an indigenous carpet design tradition in the province.