John Woodward Blocher II (born August 24, 1951) is an American former professional tennis player.

In 1967, competing in the 16's age division, Blocher won an Orange Bowl title and was the national clay court champion.

[2] Blocher played collegiate tennis for Southern Methodist University but was sidelined for much of the time with a serious wrist injury, although he was an All-American in his senior year.

[2] While playing on the professional tour in the 1970s he reached a best singles ranking of 156 and featured in the main draw at Wimbledon.

He has run his own tennis academies and coached numerous player on the professional tour, including Marianne Werdel and Tim Wilkison.