Messier 12 (M12,NGC 6218) 是 (sī)一个 (chi̍t-ê)星團 (chhiⁿ-thôan),佇 (tī)天球 (thian-kiû)的 (ê)位置 (ūi-tì)佇蛇夫座 (Chôa-hu-chō)。