| No | Name | Team | G | PA | AB | R | H | 2B | 3B | HR | RBI | HBP | BB | SO | SacB | SacF | SB | CS | AVG | OBP | SLG | OPS |
| 37 | Lollar, Sherm | Oakland Athletics | 2 | 5 | 4 | 1 | 1 | 1 | .250 | .400 | .250 | .650 | ||||||||||
| 8 | Lombardi, Ernie | Atlanta Braves | 35 | 143 | 133 | 10 | 42 | 9 | 1 | 14 | 9 | 22 | 1 | .316 | .357 | .406 | .763 | |||||
| 4 | Lopes, Davey | Kansas City Royals | 30 | 125 | 107 | 13 | 34 | 6 | 3 | 13 | 16 | 17 | 2 | 2 | 2 | .318 | .400 | .458 | .858 | |||
| 6 | Lopez, Javy | Milwaukee Brewers | 25 | 103 | 96 | 11 | 26 | 4 | 2 | 2 | 9 | 6 | 17 | 1 | .271 | .311 | .417 | .727 | ||||
| 11 | Lowenstein, John | Baltimore Orioles | 9 | 35 | 33 | 3 | 10 | 1 | 2 | 4 | 2 | 6 | .303 | .343 | .515 | .858 | ||||||
| 1 | Lucas, Peter | San Francisco Giants | 31 | 145 | 129 | 15 | 36 | 6 | 1 | 2 | 10 | 1 | 12 | 25 | 3 | 5 | .279 | .338 | .388 | .726 | ||
| 10 | Luzinski, Greg | Boston Red Sox | 33 | 144 | 131 | 20 | 45 | 7 | 4 | 7 | 13 | 28 | .344 | .403 | .489 | .891 | ||||||
| 11 | Lynch, Jerry | Boston Red Sox | 31 | 134 | 121 | 17 | 40 | 8 | 1 | 6 | 18 | 13 | 22 | .331 | .396 | .562 | .958 | |||||
| 1 | Lynn, Fred | Kansas City Royals | 36 | 166 | 147 | 16 | 51 | 14 | 4 | 23 | 18 | 40 | 1 | 1 | 1 | .347 | .416 | .524 | .939 | |||
| 27 | Mackey, Biz | Baltimore Orioles | 27 | 118 | 106 | 12 | 31 | 6 | 2 | 4 | 14 | 11 | 20 | 1 | 1 | 1 | .292 | .356 | .500 | .856 | ||
| 5 | MacPherson, Bob | Detroit Tigers | 28 | 126 | 119 | 15 | 40 | 9 | 5 | 16 | 6 | 20 | 1 | .336 | .365 | .538 | .903 | |||||
| 10 | Maddox, Gary | Toronto Blue Jays | 12 | 54 | 47 | 7 | 18 | 5 | 3 | 11 | 5 | 9 | 2 | 2 | .383 | .426 | .681 | 1.107 | ||||
| 9 | Madlock, Bill | Philadelphia Phillies | 17 | 70 | 66 | 9 | 19 | 3 | 2 | 4 | 8 | 2 | .288 | .329 | .333 | .662 | ||||||
| 33 | Mancuso, Gus | Detroit Tigers | 2 | 8 | 8 | 2 | 1 | .250 | .250 | .250 | .500 | |||||||||||
| 2 | Mantle, Mickey | Boston Red Sox | 37 | 167 | 145 | 24 | 43 | 7 | 11 | 36 | 22 | 33 | 1 | .297 | .389 | .572 | .962 | |||||
| 5 | Maris, Roger | Milwaukee Brewers | 35 | 154 | 141 | 24 | 48 | 8 | 1 | 7 | 25 | 11 | 24 | 2 | .340 | .383 | .560 | .943 | ||||
| 41 | Martinez, Edgar | New York Mets | 5 | 22 | 18 | 1 | 4 | 4 | 4 | .222 | .364 | .222 | .586 | |||||||||
| 30 | Martinez, Tino | Pittsburgh Pirates | 4 | 13 | 13 | 3 | 4 | .231 | .231 | .231 | .462 | |||||||||||
| 4 | Matthews, Eddie | Texas Rangers | 35 | 148 | 140 | 20 | 44 | 8 | 9 | 32 | 4 | 25 | 4 | .314 | .324 | .564 | .889 | |||||
| 30 | Mauer, Joe | Oakland Athletics | 3 | 13 | 11 | 3 | 5 | 3 | 1 | 2 | 2 | 1 | .455 | .538 | 1.000 | 1.538 | ||||||
| 1 | Mays, Willie | Boston Red Sox | 38 | 182 | 163 | 29 | 44 | 6 | 7 | 20 | 1 | 17 | 23 | 1 | 21 | 2 | .270 | .341 | .436 | .776 | ||
| 11 | Mazeroski, Bill | Atlanta Braves | 19 | 71 | 66 | 12 | 17 | 4 | 1 | 2 | 6 | 1 | 4 | 9 | .258 | .310 | .439 | .749 | ||||
| 10 | Mazilli, Lee | Atlanta Braves | 10 | 41 | 31 | 6 | 9 | 1 | 10 | 5 | .290 | .463 | .290 | .754 | ||||||||
| 13 | McAuliffe, Dick | California Angels | 18 | 74 | 71 | 8 | 16 | 3 | 1 | 4 | 3 | 16 | 1 | .225 | .257 | .310 | .567 | |||||
| 3 | McBride, Bake | New York Yankees | 38 | 173 | 159 | 21 | 43 | 11 | 1 | 5 | 33 | 11 | 31 | 3 | 4 | .270 | .312 | .447 | .759 | |||
| 4 | McCarver, Tim | Boston Red Sox | 35 | 146 | 136 | 14 | 38 | 7 | 5 | 20 | 8 | 24 | 2 | .279 | .315 | .441 | .756 | |||||
| 5 | McClure, Millard | Chicago White Sox | 28 | 126 | 110 | 14 | 31 | 11 | 1 | 1 | 5 | 16 | 27 | .282 | .373 | .427 | .800 | |||||
| 14 | McCovey, Willie | Chicago Cubs | 18 | 73 | 65 | 16 | 20 | 1 | 6 | 12 | 8 | 16 | .308 | .384 | .600 | .984 | ||||||
| 7 | McDougald, Gil | Montreal Expos | 35 | 139 | 129 | 15 | 35 | 10 | 1 | 15 | 8 | 23 | 2 | 2 | .271 | .309 | .372 | .681 | ||||
| 10 | McGee, Willie | Chicago White Sox | 10 | 42 | 38 | 2 | 8 | 1 | 3 | 3 | 7 | 1 | .211 | .262 | .237 | .499 |