Janel Parrish and her husband Chris Long are pulling the plug on their marriage ... because they just filed for divorce ... TMZ has learned.

Janel and Chris beelined it to court this week and filed a joint petition asking the court for a divorce after 7 years of marriage ... according to new legal docs obtained by TMZ.

We broke the story earlier this month ... the Hallmark star and her man had been separated for a few months.

Janel and Chris tied the knot back in September 2018 ... they never had kids, so no issues with child support or custody here.

The joint filing says they agree on spousal support, division of property, legal fees, and the date of separation.

Parrish appeared in "The O.C.," "Heroes" and "Zoey 101" before breaking out as a main star of "Pretty Little Liars." In more recent years, she's made her living on Hallmark flicks like "Christmas on Duty," "Return to Office," and the recently released "Two For Tee."