The 1970 Oakland Athletics season involved the A's finishing second in the American League West with a record of 89 wins and 73 losses. In 1970, owner Charlie Finley officially changed the team name from the Athletics to the "A's". An "apostrophe-s" was added to the cap and uniform emblem to reflect that fact.

Offseason

During the off-season, Reggie Jackson sought an increase in salary, and A's owner Charlie Finley threatened to send Jackson to the minors. Commissioner Bowie Kuhn successfully intervened in their dispute. Reggie Jackson demanded $60,000 per season, while he was offered $40,000 by Charlie Finley. Both parties settled on $45,000, but Jackson's numbers in 1970 dropped sharply, as he hit just 23 home runs while batting .237.

Notable transactions

Regular season

Season standings

Record vs. opponents

Notable transactions

Roster

Player stats

Batting

Starters by position

''Note: Pos = Position; G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in''

Other batters

''Note: G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in''

Pitching

Starting pitchers

Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts

Other pitchers

Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts

Relief pitchers

Note: G = Games pitched; W = Wins; L = Losses; SV = Saves; ERA = Earned run average; SO = Strikeouts

Awards and honors

Farm system