| 7/18/2017 | Re-signed forward Michael Bournival to a one-year, two-way contract. |
| 7/14/2017 | Re-signed forward Ondrej Palat to five-year contract. |
| 7/10/2017 | Re-signed forward Tyler Johnson to a seven-year contract. |
| 7/5/2017 | Re-signed defenseman Jake Dotchin to a two-year, one-way contract. |
| 7/5/2017 | Re-signed forward Matthew Peca to a one-year, two-way contract. |
| 7/3/2017 | Re-signed defenseman Slater Koekkoek to a one-year, one-way contract worth $800,000. |
| 7/1/2017 | Signed defenseman Jamie McBain to a one-year, two-way contract. |
| 7/1/2017 | Signed free agent left wing Alex Gallant to a one-year, two-way contract. |
| 7/1/2017 | Signed free agent left wing Chris Kunitz to a one-year contract worth $2 million. |
| 7/1/2017 | Signed defenseman Mat Bodie to a one-year, two-way contract. |
| 7/1/2017 | Signed goaltender Michael Leighton to a one-year, two-way contract. |
| 7/1/2017 | Signed free agent defenseman Dan Girardi to a two-year contract worth $3 million per year. |
| 7/1/2017 | Acquired forward Carter Verhaeghe from the New York Islanders in exchange for goaltender Kristers Gudlevskis. |
| 7/1/2017 | Signed defenseman Oleg Sosunov to three year, entry-level contract. |
| 6/29/2017 | Signed forward Alex Volkov to three-year entry-level contract. |
| 6/28/2017 | Re-signed forward Gabriel Dumont to two-year contract. |
| 6/28/2017 | Re-signed forward Cory Conacher to two-year contract. |
| 6/26/2017 | Issued qualifying offers to restricted free agents Michael Bournival, Tyler Johnson, Tye McGinn, Ondrej Palat, Matthew Peca, Tanner Richard, Jake Dotchin, Slater Koekkoek and Kristers Gudlevskis. |
| 6/26/2017 | Re-signed forward Yanni Gourde to two-year, one-way contract. |
| 6/26/2017 | Re-signed defenseman Andrej Sustr to one-year contract. |
| 6/22/2017 | Signed goaltender Peter Budaj to two-year contract. |
| 6/21/2017 | Vegas selected defenseman Jason Garrison in Expansion Draft. For drafting Garrison, the Golden Knights also receive the Lightning's 2017 second-round draft pick, Pittsburgh's 2018 fourth-round draft pick and negotiating rights with unsigned forward prospect Nikita Gusev. |
| 6/15/2017 | Acquired defenseman Mikhail Sergachev and a 2018 conditional second-round draft pick from Montreal for forward Jonathan Drouin and a 2018 sixth-round draft pick. |
| 5/15/2017 | Signed forward Taylor Raddysh to three-year, entry-level contract. |
