"Happy Girl" is the title of a song written by Beth Nielsen Chapman and Annie Roboff, and recorded by American country music singer Martina McBride. It was released in April 1998 as the third single from her album, Evolution. The song reached a peak of number 2 on the U.S. country charts and number 4 on the Canadian country charts.
"Happy Girl" debuted at number 70 on the Billboard Hot Country Singles & Tracks (now Hot Country Songs) charts dated for April 25, 1998. It spent twenty-two weeks on the chart, peaking at number 2 on the chart dated for August 8, 1998 and holding that position for two weeks.