1909–10 IAAUS men's basketball season

The 1909–10 IAAUS men's basketball season began in December 1909, progressed through the regular season, and concluded in March 1910.

Rule changes

 * Continuous dribbling became legal; previously, a player could bounce the ball only once at a time, the bounce had to be higher than his head, and he had to recover the ball himself, in effect passing the ball to himself.
 * The double dribble became illegal; previously, a player could make as many single-bounce dribbles as he wanted as long as he recovered the ball after each bounce (as if passing to himself each time).
 * A player who dribbled the ball was allowed to shoot off the dribble for the first time; previously, a dribbler was not allowed to shoot the ball immediately after dribbling and had to pass it to someone else to shoot it.

Season headlines

 * The Intercollegiate Athletic Association of the United States (IAAUS) renamed itself the National Collegiate Athletic Association (NCAA) after the end of the season.
 * The new rules allowing continuous dribbling rule and permitting a dribbler to shoot the ball off a dribble converted dribbling from a defensive tactic into a powerful offensive one.
 * In February 1943, the Helms Athletic Foundation retroactively selected Columbia as its national champion for the 1909–10 season.
 * In 1995, the Premo-Porretta Power Poll retroactively selected Williams as its national champion for the 1909–10 season.

Helms College Basketball All-Americans
The practice of selecting a Consensus All-American Team did not begin until the 1928–29 season. The Helms Athletic Foundation later retroactively selected a list of All-Americans for the 1909–10 season.

Major player of the year awards

 * Helms Player of the Year: Harlan "Pat" Page, Chicago (retroactive selection in 1944)