The One Hundred Thirty-Third Ohio General Assembly was a meeting of the Ohio state legislature, composed of the Ohio State Senate and the Ohio House of Representatives.

It convened in Columbus, Ohio on January 7, 2019, and adjourned December 31, 2020.

The apportionment of legislative districts was based on the 2010 United States census and 2011 redistricting plan.

Resignations and new members are discussed in the "Changes in membership" section, below.

seated seated Listed alphabetically by chamber, including Chairperson and Ranking Member.