The former Stanford All-Americans are ranked No. 1 for the 271st week, breaking John McEnroe's record.
"To achieve this record and surpass John McEnroe, who we've always looked up to, is awesome," Mike said on the ATP World Tour's Web site. "This ranks up with our record of most team titles (75). It shows we were consistent throughout our whole career and we didn't want to relinquish the top spot."
Bob, whose first wedding anniversary is Tuesday, had a different perspective on the record than his 33-year-old twin, who's still single.
"It is number two, right below getting married, and will soon be number three, after my wife gives birth to our daughter in January," he said.
The Bryans, Southern California-born sons of longtime Sacramento Capitals coach Wayne Bryan, are tied with Australians Todd Woodbridge and Mark Woodforde for the most Grand Slam men's doubles titles in the Open Era (11).
Pete Sampras holds the mark for the most weeks at No. 1 in singles at 286. Roger Federer, ranked No. 3 behind Novak Djokovic and Rafael Nadal, trails by one.
New rankings -- Following are this week's world rankings of professional players with Northern California ties (change from last week in parentheses):
Mike Bryan, 1998 NCAA doubles champion from Stanford -- No. 1 in doubles (no change), unranked in singles.
John Paul Fruttero, Cal All-American in 2001 and 2002 -- Career-high No. 117 in doubles (no change), unranked in singles.
Kiryl Harbatsiuk, three-time Big Sky Conference MVP (2009-11) at Sacramento State -- No. 763 in singles (-1), No. 1,246 in doubles (+1).
Mark Knowles, Sacramento Capitals of World TeamTennis (2001-07, 2009-11) -- No. 58 in doubles (no change), unranked in singles.
Scott Lipsky, 2002 NCAA doubles runner-up from Stanford -- No. 29 in doubles (no change), unranked in singles.
David Martin, 2002 NCAA doubles runner-up from Stanford -- No. 105 in doubles (no change), No. 754 in singles (-1).
Conor Niland, 2006 Pacific-10 Conference Player of the Year and two-time All-American at Cal -- No. 286 in singles (no change), unranked in doubles.
Sam Querrey, San Francisco native -- No. 93 in singles (no change), No. 38 in doubles (no change).
Dmitry Tursunov, Folsom resident -- No. 40 in singles (no change), No. 237 in doubles
Dusan Vemic, Capitals (2010-11) -- No. 499 in doubles (-1), No. 1,511 in singles (+2).
Jimmy Wang, Folsom resident -- No. 274 in singles (+1), No. 521 in doubles (+3).
Raquel Kops-Jones, 2003 NCAA doubles champion from Cal -- No. 37 in doubles (no change), No. 720 in singles (+1).
Maria Sanchez, Modesto resident -- No. 269 in doubles (-3), No. 695 in singles (+1).