| | | Saturday, July 7th, 1962 | | Signed RF Roger Maris to a 1-year contract extension worth a total of $75,000. |
| Tuesday, July 3rd, 1962 | | Signed MR Al Worthington to a 4-year contract extension worth a total of $299,920. |
| Monday, June 4th, 1962 | | Placed MR Chuck Churn on the HBC Triple A 7-day disabled list. |
| Saturday, February 3rd, 1962 | | Signed free agent 2B Bill Mazeroski to a 3-year contract worth a total of $1,358,900. |
| Monday, January 1st, 1962 | | Placed MR Tom Gorman on the 40-man roster. | | Placed MR Tom Gorman on the active roster. |
| Friday, December 29th, 1961 | | Signed free agent MR Tom Gorman to a 1-year contract worth a total of $125,500. |
| Wednesday, December 6th, 1961 | | Signed free agent 1B Bill Skowron to a 3-year contract worth a total of $316,200. |
| Thursday, November 30th, 1961 | | Drafted RF Pete Ward in the 1961 first-year player draft (Round 1, Pick 22, 22nd overall pick). | | Drafted MR Sammy Ellis in the 1961 first-year player draft (Round 2, Pick 22, 46th overall pick). | | Drafted SS Ernie Fazio in the 1961 first-year player draft (Round 3, Pick 23, 69th overall pick). | | Drafted 1B Rick Herrscher in the 1961 first-year player draft (Round 4, Pick 25, 94th overall pick). | | Drafted MR Dave Tyriver in the 1961 first-year player draft (Round 5, Pick 11, 105th overall pick). | | Drafted 1B Pidge Browne in the 1961 first-year player draft (Round 5, Pick 29, 123rd overall pick). |
| Sunday, November 12th, 1961 | | MR Bobby Locke received a 1-year contract through automatic renewal worth a total of $14,763. | | 3B Ron Santo received a 1-year contract through automatic renewal worth a total of $14,763. | | MR Jim Kaat received a 1-year contract through automatic renewal worth a total of $14,763. | | MR Tom Gorman becomes a free-agent. | | 1B Walt Dropo becomes a free-agent. | | MR Bill Pleis received a 1-year contract through automatic renewal worth a total of $14,763. | | CF Lou Brock received a 1-year contract through automatic renewal worth a total of $14,763. | | MR Don Choate received a 1-year contract through automatic renewal worth a total of $14,763. | | CL Dick Tomanek becomes a free-agent. |
| Thursday, November 9th, 1961 | | SP Gary Bell received a 1-year contract through arbitration worth a total of $28,880. | | SS Billy Harrell received a 1-year contract through arbitration worth a total of $22,145. | | CF Carroll Hardy received a 1-year contract through arbitration worth a total of $22,145. | | RF Roger Maris received a 1-year contract through arbitration worth a total of $70,000. | | SP Don Ferrarese received a 1-year contract through arbitration worth a total of $22,145. | | SS Larry Raines received a 1-year contract through arbitration worth a total of $22,145. |
| Thursday, October 19th, 1961 | | SP Ron Kline has executed his last optional contract year. |
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