Paduasoy or padesoy (pronounced /ˈpædjuː.əsɔɪ/) (French: peau de soie) is a luxurious strong corded or grosgrain silk textile that originated in Early Modern Europe. The term paduasoy first appeared in English in 1663.

Paduasoy silk was woven in a variation of the satin weave, with bindings arranged to create fine cross-ridges across the fabric. In the British East India Company supercargoes' records, examined by Leanna Lee-Whitman, paduasoy made its first appearance in 1736. Its fine appearance is endorsed in a letter of Mrs. Benjamin Franklin to her husband in London, in 1765: "The chairs are plain horsehair and look as well as Paduasoy." In the British East India records consulted by Leanna Lee-Whitman, black paduasoys completely supplanted "plain" ones after 1761:George Washington commissioned a friend, Tench Tilghman to purchase numerous household items, "if great bargains are to be had", from the cargo of a ship in the China trade that had docked at Baltimore and were to be auctioned in October 1785: among his requests, if they could be had cheaply, were "About 13 yds of good bla: paduasoy".Beatrix Potter employed paduasoy to set the old-fashioned scene in The Tailor of Gloucester, which begins, "In the time of swords and periwigs and full-skirted coats with flowered lappets—when gentlemen wore ruffles, and gold-laced waistcoats of paduasoy and taffeta—there lived a tailor in Gloucester.