The two Olympic champions were named 2018 Athletes of the Year at USA Swimming's gala in New York.
Olympic gold medallists and world-record holders Katie Ledecky and Ryan Murphy were each named Athlete of the Year at the annual USA Swimming Golden Goggle Awards in New York.
They were honoured after standout performances which helped lead the U.S. Team to 45 medals at the 2018 Pan Pacific Championships in Tokyo.
Even if she wasn't as dominant as in the past, five-time Olympic champion Ledecky had another historic year.
In May she broke her own 1500m freestyle world record in her first race as a professional at the TYR Pro Swim Series in Indianapolis.
The 21-year-old also won three U.S. titles (200m, 400m, and 800m free) and took five medals (three golds) at the Pan Pacs in August, more than any other swimmer.
Ledecky claimed the Female Athlete of the Year award for a record sixth consecutive year. Only Michael Phelps (seven, but not back-to-back) has more.
Rio 2016 triple gold medallist Ryan Murphy was the big winner of the night in Times Square with three honours (including Male Athlete of the Year and Male Race of the Year).
In 2018 the 23-year-old swept three U.S. backstroke titles and claimed three events (two individuals - 100m and 200m back) at the Pan Pacific Championships, where he was named Most Valuable Player.
"I came into tonight totally not expecting that" - he was quoted as saying by usaswimming.org - "It's a really good reminder of why we're training so hard right now and what the benefits can be".
The proceeds from the event, hosted by actor John O'Hurley, went to the US Swimming Foundation.