Kvitova served for the first set at 6-5, but was broken at love and then lost four straight points in the tiebreaker to trail 4-3. But she capitalized on a couple of errors by the Spaniard and converted her first set point when Suarez Navarro netted a backhand.
In the second set, she broke to lead 4-2, and served out the match at love when Suarez Navarro sent a forehand long.
The 18th-ranked Suarez Navarro was the first Spanish woman since 2001 to reach the fourth round at the All England Club.
All remaining men and women were set to play their fourth-round matches.
More Sports Headlines
Drew Jackson's monster season with AquaSox resonating with M's brass So long to the Silvertips beat, but not goodbye Is Packers wide receiver Nelson in for bumpy ride? Cougars’ Luani goes from futbol to football M's fall 6-3 to Chisox in 10; Rodney DFA'd, Farquhar sent to Tacoma Andrade leads Champions Tour's Boeing Classic by 3 strokes AquaSox upend Dust Devils 3-2 Real Salt Lake beats Sounders 2-0
Our new comment system is not supported in IE 7. Please upgrade your browser here.