'Orville' Stars Adrianne Palicki and Scott Grimes Divorcing 2 Months After Marriage

It's about to get REALLY awkward on "The Orville" ... because two of the show's stars are getting divorced just two months after tying the knot.

Adrianne Palicki and Scott Grimes met while shooting "The Orville" in 2017 and went public with their relationship in 2018.

36-year-old Adrianne plays Commander Kelly Grayson on the show, and 48-year-old Scott plays Lieutenant Gordon Malloy -- they're two of the main leads ... so a LOT of scenes together.

They got married in May 2019 in a small ceremony Austin -- but things obviously took a turn for the worse and on Monday, Adrianne filed for divorce in Los Angeles.

On the court docs obtained by TMZ, Adrianne lists the date of marriage as May 19 and says they separated on July 2.

She also notes the two have a prenup -- so the financial side of the split should be relatively easy. She cites irreconcilable differences for the break up.

What makes things even more awkward ... the two appeared at a panel together at Comic-Con in San Diego on Saturday ... though they didn't sit directly next to each other.

Penny Johnson Jerald -- who plays Doctor Claire Finn on the show -- got the middle seat.

The show is set for a 3rd season -- and production is expected to begin soon ... which again, could get awkward on set. Ever have to work in close quarters with your ex?!

By the way, this is Scott's 3rd divorce. The first for Adrianne.

Adrianne has had a pretty solid career in Hollywood -- she starred as Tyra on the "Friday Night Lights" TV series ... and also had a major role on "Agents of S.H.I.E.L.D."