Meaning and name origin
Riley \r(i)-ley\ as a girl's name (also used as boy's name Riley), is pronounced RY-lee. It is of Irish and Gaelic origin, and the meaning of Riley is "courageous". Variant of O'Reilly. Lately adopted for girls and boys.
Riley is not a popular first name for females but a very popular surname or last name for all people (#187 out of 88799, Top 1%) (2000 U.S. Census).
Displayed below is the baby name popularity of the name Riley for girls. Riley reached its highest rank of #38 in the U.S. in 2009. (2014 statistics).
Displayed below is a comparison of the popularity of the girl name Riley and its variant forms. Popular variation forms ranked in the Top 1000/100 are Riley (#47), Rylee (#113), Ryley and Reilly. (2014 statistics).