1966 Baseball Hall of Fame balloting
Elections to the Baseball Hall of Fame for 1966 followed the system introduced for even-number years in 1956.
The Baseball Writers' Association of America voted by mail to select from recent major league players with provision for a second, "runoff" election in case of no winner. Ted Williams tallied more than 90% on the first ballot. Meanwhile, the Veterans Committee was meeting annually to consider executives, managers, umpires, and earlier major league players. It selected Casey Stengel. A formal induction ceremony was held in Cooperstown, New York, on July 25, 1966, with Commissioner of Baseball William Eckert presiding. During his acceptance speech, Williams advocated for the inclusion of Negro league baseball players, such as Satchel Paige and Josh Gibson, in the Hall of Fame. Paige was inducted in 1971, and Gibson in 1972.
BBWAA election
The BBWAA was authorized to elect players active in 1946 or later, but not after 1960. All 10-year members of the BBWAA were eligible to vote.Voters were instructed to cast votes for up to 10 candidates; any candidate receiving votes on at least 75% of the ballots would be honored with induction to the Hall. A total of 49 players received votes; 302 ballots were cast, with 227 votes required for election. A total of 2,210 individual votes were cast, an average of 7.32 per ballot.
Candidates who were eligible for the first time are indicated here with a dagger. The one candidate who received at least 75% of the vote and was elected is indicated in bold italics; candidates who have since been elected in subsequent elections are indicated in italics. Al López was later elected as a manager.
Ted Williams was elected with 93.4% of the vote. Williams won the Triple Crown twice and was the last player to hit.400 in a season. He famously used his Hall induction speech to advocate for elections of Negro League players.
Tommy Bridges was eligible for the final time.
| Player | Votes | Percent | Change |
| †Ted Williams | 282 | 93.4 | - |
| Red Ruffing | 208 | 68.9 | 1.2% |
| Roy Campanella | 197 | 65.2 | 8.0% |
| Joe Medwick | 187 | 61.9 | 8.2% |
| Lou Boudreau | 115 | 38.1 | 4.3% |
| Al López | 109 | 36.1 | 7.7% |
| †Enos Slaughter | 100 | 33.1 | - |
| Pee Wee Reese | 95 | 31.5 | 4.8% |
| Marty Marion | 86 | 28.5 | 3.6% |
| Johnny Mize | 81 | 26.8 | 0.1% |
| Ralph Kiner | 74 | 24.5 | 9.1% |
| Johnny Vander Meer | 72 | 23.8 | 1.6% |
| Allie Reynolds | 60 | 19.9 | 2.5% |
| Bucky Walters | 56 | 18.5 | 1.1% |
| Phil Rizzuto | 54 | 17.9 | 4.5% |
| Arky Vaughan | 36 | 11.9 | 3.4% |
| Mel Harder | 34 | 11.3 | 14.1% |
| Ernie Lombardi | 34 | 11.3 | 5.1% |
| Hal Newhouser | 32 | 10.6 | 2.3% |
| Joe Gordon | 31 | 10.3 | 4.6% |
| Bobby Doerr | 30 | 9.9 | 2.0% |
| George Kell | 29 | 9.6 | 6.8% |
| Billy Herman | 28 | 9.3 | 3.6% |
| Bobo Newsom | 25 | 8.3 | 0.2% |
| Bob Lemon | 21 | 7.0 | 4.9% |
| †Mickey Vernon | 20 | 6.6 | - |
| †Alvin Dark | 17 | 5.6 | - |
| Tommy Bridges | 16 | 5.3 | 2.2% |
| †Bobby Thomson | 12 | 4.0 | - |
| Phil Cavarretta | 9 | 3.0 | 7.9% |
| †Larry Doby | 7 | 2.3 | - |
| †Don Newcombe | 7 | 2.3 | - |
| †Carl Erskine | 6 | 2.0 | - |
| †Jim Hegan | 5 | 1.7 | - |
| †Gil McDougald | 5 | 1.7 | - |
| †Grady Hatton | 4 | 1.3 | - |
| †Whitey Lockman | 4 | 1.3 | - |
| †Hank Sauer | 4 | 1.3 | - |
| †Del Ennis | 3 | 1.0 | - |
| †Carl Furillo | 2 | 0.7 | - |
| †Marv Grissom | 2 | 0.7 | - |
| †Andy Pafko | 2 | 0.7 | - |
| †Morrie Martin | 2 | 0.7 | - |
| †Del Rice | 2 | 0.7 | - |
| †Bobby Adams | 1 | 0.3 | - |
| †Chico Carrasquel | 1 | 0.3 | - |
| †Jim Hearn | 1 | 0.3 | - |
| †Solly Hemus | 1 | 0.3 | - |
| †Bob Porterfield | 1 | 0.3 | - |
| Elected to the Hall. These individuals are also indicated in bold italics. | |
| Players who were elected in future elections. These individuals are also indicated in plain italics. |