Ryan Anthony Costello (born September 7, 1976) is an American politician, lobbyist and attorney who served as the U.S. representative for Pennsylvania's 6th congressional district from 2015 to 2019.

[12] Vincent Galko, a consultant for Costello, said, "When news broke that this material had likely been stolen by a foreign actor, we immediately said, ‘We’re not going to use it.

[16] Even before the old map was thrown out, Costello had already attracted a well-financed Democratic challenger, entrepreneur and Air Force veteran Chrissy Houlahan.

[14] According to The Philadelphia Inquirer, "Of the many Republicans who took a political blow from Pennsylvania's new congressional map, Chester County's Ryan Costello got hit the hardest.

[23] In March 2018, Costello filed petitions to get on the 2018 ballot,[24] but later that month, he announced that he was dropping his reelection bid.

[26] After announcing his retirement, CNN called him a "rare brand in the House GOP conference: a young moderate willing to break with his leadership and his President on everything from gun control bills to repealing and replacing the Affordable Care Act.

"[27] While FiveThirtyEight evaluated Costello's voting record and found that he "voted in line with Trump's position 95.5% of the time,"[28] a ranking by the Lugar Center showed Costello was the ninth most bipartisan member of Congress in 2017 and held the second highest bipartisan ranking of any member of Pennsylvania's congressional delegation.

[29] In addition, according to data from Quorum, Costello was ranked number five in the top ten Republican members who vote against their own party.

Throughout his tenure, Costello was ranked as one of the most bipartisan Members of Congress, breaking with his party to support environment, health care, and education initiatives.

[35] After leaving Congress in January 2019, he announced the formation of Ryan Costello Strategies, a consulting firm.