Shanice is a 20th-century African American name derived from a creative blend of the Sha- prefix popular in 1970s-80s naming with -nice (resembling Janice / from the Hebrew Yochanan, "God is gracious"). At age 11, Shanice was the youngest performer ever to record a McDonald's commercial jingle (1984). Shanice McCall — British singer. Shanice Coley — American model. Shaniqua is the slightly more elaborated form of the same tradition. The name peaked in 1992 with the popularity of "I Love Your Smile" and has since become a vintage choice for revival, paralleling the late-2010s comeback of Aaliyah and Brandy.
Shanice does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Shanice reduce to 5, The Seeker. This is a traditional interpretive system, not a factual claim about the name.