Tee Allen Parker, owner of The Machine Shed Bar & Grill and one of several Texas bar owners suing the governor, hosted the gathering outside his bar Sunday.
Parker has accused Abbott of discrimination, saying bars are being "targeted."
"You can't tell me that my tiny little bar is the problem. He's the problem," Parker said.
Jared Woodfill, the attorney representing Parker and 21 other plaintiffs, also said Abbott's order unfairly singles out bars while other businesses such as hair salons remain open.
"This one individual is picking and choosing winners and losers," Woodfill said. "Gov. Abbott has chosen to sentence bar owners to bankruptcy. [He] is unilaterally destroying our economy and trampling on our constitutional rights."
According to the bar's Facebook page, another "Free Our Bars" rally is scheduled for July 5.
"We will protest every week until we are restored our constitutional rights!" the event page reads. "Come out and let's stand together. We will donate every week to a different bar that is closed."