| Season Number: | 15 |
| Bgcolour: |
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| Showrunner: | |
| Network: | ABC |
| Num Episodes: | 25 |
| Episode List: | List of Grey's Anatomy episodes |
The fifteenth season of the American television medical drama Grey's Anatomy was ordered on April 20, 2018, by American Broadcasting Company (ABC). The season premiered on September 27, 2018, with a special 2-hour premiere. The episode count for the season consists in 25 episodes. The season is produced by ABC Studios, in association with Shondaland Production Company and Entertainment One Television; the showrunners being Krista Vernoff and William Harper.
In this season, Grey's Anatomy becomes the longest-running American primetime medical drama series, after the series finale of ER on April 2, 2009. It also features the shortest ensemble main cast seen since the ninth season. Kim Raver was repromoted as series-regular after 5 guest appearances in the previous season.
See also: List of Grey's Anatomy episodes. The number in the "No. overall" column refers to the episode's number within the overall series, whereas the number in the "No. in season" column refers to the episode's number within this particular season. "U.S. viewers in millions" refers to the number of Americans in millions who watched the episodes live. Each episode of this season is named after a song.
See main article: List of Grey's Anatomy cast members and List of Grey's Anatomy characters.
On May 21, 2018, it was announced that Kim Raver had once again been promoted to series-regular this season after previously having a recurring role last season. On July 31, 2018, it was announced that Chris Carmack would be starring in a recurring role for Season 15, being revealed that he would play the role of a new orthopedic surgeon at the hospital. On August 13, 2018, it was announced that Jeff Perry would be returning as Thatcher Grey, Meredith's father, for the first time since his last appearance in the seventh season. On September 6, 2018, it was announced that Alex Landi had been cast in a recurring role as Dr. Nico Kim, who will be the first gay male surgeon to appear on the show. On October 10, 2018, it was announced that Josh Radnor had been cast as Meredith's new love-interest. On December 13, 2018, it was announced that Jennifer Grey had been cast in "a mysterious role," later to be revealed she portrayed Betty's mom.
It was announced on February 13, 2019, that Amy Acker had been cast as Derek Shepherd's fourth sister, Dr. Kathleen Shepherd. Acker is expected to appear in 1 episode this season, that episode being an Amelia-centric episode. On March 5, 2019, it was revealed that Abigail Spencer would reprise her role as Megan Hunt for 1 episode this season, which will air during spring.
| No. in series | No. in season | Episode | Air date | Time slot (EST) | Rating/Share (18–49) | Viewers (m) | 18–49 Rank | Viewership rank | Drama rank |
|---|---|---|---|---|---|---|---|---|---|
| 318 | 1 | "With a Wonder and a Wild Desire" | Thursday 8:00 p.m. | 1.9/8 | 6.81 | 13 | 4 | ||
| 319 | 2 | "Broken Together" | Thursday 9:00 p.m. | 1.9/8 | 6.81 | 13 | 4 | ||
| 320 | 3 | "Gut Feeling" | Thursdays 8:00 p.m. | 1.6/7 | 6.61 | 13 | 3 | ||
| 321 | 4 | "Momma Knows Best" | 1.5/7 | 6.72 | 17 | 4 | |||
| 322 | 5 | "Everyday Angel" | 1.5/7 | 6.54 | 18 | 2 | |||
| 323 | 6 | "Flowers Grow Out of My Grave" | 1.6/7 | 6.71 | 14 | 2 | |||
| 324 | 7 | "Anybody Have a Map?" | 1.6/7 | 6.60 | 11 | 20 | 1 | ||
| 325 | 8 | "Blowin' in the Wind" | 1.8/7 | 7.30 | 9 | 21 | 2 | ||
| 326 | 9 | "Shelter from the Storm" | 1.9/8 | 7.07 | 7 | 17 | 3 | ||
| 327 | 10 | "Help, I'm Alive" | 1.6/7 | 6.98 | 3 | 12 | 2 | ||
| 328 | 11 | "The Winner Takes It All" | 1.7/8 | 7.27 | 10 | 13 | 1 | ||
| 329 | 12 | "Girlfriend in a Coma" | 1.5/7 | 6.79 | 6 | 12 | 1 | ||
| 330 | 13 | "I Walk the Line" | 1.4/7 | 6.58 | 6 | 19 | 2 | ||
| 331 | 14 | "I Want a New Drug" | 1.7/8 | 6.89 | 8 | 20 | 2 | ||
| 332 | 15 | "We Didn't Start the Fire" | 1.6/8 | 6.99 | 7 | 16 | 1 | ||
| 333 | 16 | "Blood and Water" | 1.5/7 | 6.55 | 8 | 17 | 2 | ||
| 334 | 17 | "And Dream of Sheep" | 1.4/7 | 6.57 | 6 | 16 | 2 | ||
| 335 | 18 | "Add It Up" | 1.4/7 | 7.00 | 6 | 9 | 2 | ||
| 336 | 19 | "Silent All These Years" | 1.6/7 | 7.37 | 5 | 12 | 2 | ||
| 337 | 20 | "The Whole Package" | 1.5/7 | 6.85 | 7 | 18 | 2 | ||
| 338 | 21 | "Good Shepherd" | 1.5/7 | 6.81 | 3 | 15 | 1 | ||
| 339 | 22 | "Head Over High Heels" | 1.3/7 | 6.24 | 3 | 15 | 1 | ||
| 340 | 23 | "What I Did for Love" | 1.4/7 | 6.96 | 6 | 14 | 1 | ||
| 341 | 24 | "Drawn to the Blood" | 1.4/7 | 6.37 | 4 | 15 | 1 | ||
| 342 | 25 | "Jump into the Fog" | 1.3/6 | 5.99 | 7 | 17 | 1 | ||
| No. in series | No. in season | Episode | Air date | Time slot (EST) | 18–49 increase | Viewers (millions) increase | Total 18-49 | Total viewers (millions) | Ref |
|---|---|---|---|---|---|---|---|---|---|
| 318 | 1 | "With a Wonder and a Wild Desire" | Thursday 8:00 p.m. | 1.5 | 3.92 | 3.4 | 10.74 | ||
| 319 | 2 | "Broken Together" | Thursday 9:00 p.m. | 1.5 | 3.92 | 3.4 | 10.74 | ||
| 320 | 3 | "Gut Feeling" | Thursdays 8:00 p.m. | 1.4 | 3.36 | 3.0 | 9.98 | ||
| 321 | 4 | "Momma Knows Best" | 1.4 | 3.58 | 2.9 | 10.29 | |||
| 322 | 5 | "Everyday Angel" | 1.4 | 3.55 | 2.9 | 10.10 | |||
| 323 | 6 | "Flowers Grow Out of My Grave" | 1.3 | 3.16 | 2.9 | 9.88 | |||
| 324 | 7 | "Anybody Have a Map?" | 1.5 | 3.55 | 3.1 | 10.16 | |||
| 325 | 8 | "Blowin' in the Wind" | 1.4 | 3.45 | 3.2 | 10.76 | |||
| 326 | 9 | "Shelter from the Storm" | 1.2 | 3.30 | 3.1 | 10.38 | |||
| 327 | 10 | "Help, I'm Alive" | 1.4 | 3.64 | 3.0 | 10.63 | |||
| 328 | 11 | "The Winner Takes It All" | 1.3 | 3.23 | 3.0 | 10.51 | |||
| 329 | 12 | "Girlfriend in a Coma" | 1.2 | 3.26 | 2.8 | 10.12 | |||
| 330 | 13 | "I Walk the Line" | 1.4 | 3.55 | 2.9 | 10.14 | |||
| 331 | 14 | "I Want a New Drug" | 1.2 | 3.19 | 2.9 | 10.08 | |||
| 332 | 15 | "We Didn't Start the Fire" | 1.2 | 3.10 | 2.8 | 10.09 | |||
| 333 | 16 | "Blood and Water" | 1.2 | 3.34 | 2.7 | 9.91 | |||
| 334 | 17 | "And Dream of Sheep" | 1.2 | 3.23 | 2.5 | 9.68 | |||
| 335 | 18 | "Add It Up" | 1.2 | 2.93 | 2.6 | 9.94 | |||
| 336 | 19 | "Silent All These Years" | 1.2 | 3.19 | 2.8 | 10.57 | |||
| 337 | 20 | "The Whole Package" | 1.2 | 3.10 | 2.7 | 9.96 | |||
| 338 | 21 | "Good Shepherd" | 1.2 | 3.09 | 2.6 | 9.83 | |||
| 339 | 22 | "Head Over High Heels" | 1.3 | 3.36 | 2.5 | 9.62 | |||
| 340 | 23 | "What I Did for Love" | 1.2 | 3.19 | 2.6 | 10.16 | |||
| 341 | 24 | "Drawn to the Blood" | 1.1 | 2.97 | 2.5 | 9.34 | |||
| 342 | 25 | "Jump into the Fog" | 1.1 | 3.11 | 2.4 | 9.11 | |||