William Lauder (February 23, 1874 – May 20, 1933) was an American professional baseball third baseman and coach.

[1] He recorded 210 putouts as a fielder, which remains one of the highest totals all time among Major League third basemen.

In 1903, his final Major League season, he played in 108 games, getting 111 hits in 395 for a .281 batting average.

As a fielder, he handled 1801 chances, all but 7 at third base, with 190 errors for a fielding percentage of .895.

[1] After his playing career ended, Lauder became a lawyer after studying law at Harvard University, wrote a baseball book, and ultimately became an insurance salesman.