Meaning of Joan. English name. In English, the name Joan means-god is gracious, a feminine form of john. Other origins for the name Joan include-English, Hebrew.The name Joan is most often used as a girl name or female name. English Name Meaning-god is gracious, a feminine form of john.Origin-England. Alternate Origins-Hebrew.eaning of Joan. English name. In English, the name Joan means-god is gracious, a feminine form of john. Other origins for the name Joan include-English, Hebrew.The name Joan is most often used as a girl name or female name. English Name Meaning-god is gracious, a feminine form of john.