Tyler Ryan Jay (born April 19, 1994) is an American professional baseball pitcher in the Milwaukee Brewers organization.

Jay committed to the University of Illinois Urbana-Champaign to play college baseball for the Fighting Illini.

[9] He officially signed with the Twins on June 17 and was assigned to the Fort Myers Miracle where he posted a 3.93 ERA in 18+1⁄3 innings pitched.

[11] In 2019, he began struggling to swallow as a result of eosinophilic esophagitis and started to lose weight, which correlated with a decline in his on-field performance.

After spending 2021 out of baseball and focusing on his health, Jay asked Joliet Slammers manager Daniel Schlereth for a tryout[12] and signed with the Frontier League team on June 7, 2022.

In 2023, Jay made 20 appearances (7 starts) for the Slammers, logging a 4–3 record and 4.26 ERA with 64 strikeouts and seven saves in 57 innings pitched.

[20] Jay began the 2024 season back in Syracuse, logging a scoreless appearance for the affiliate to start the year.

[25] On June 30, the Mets purchased Jay's contract, adding him back to the major league roster.

[32] Jay elected free agency in lieu of an outright assignment to the Triple-A Tacoma Rainiers on January 28.