"Key West Intermezzo (I Saw You First)" is a song by American rock musician John Mellencamp.

Happy Go Lucky (1996), and peaked at number 14 on the US Billboard Hot 100, making it his final top-40 hit in the US.

In Canada, it gave Mellencamp his fourth number-one single on the RPM 100 Hit Tracks chart, staying at number one for five weeks.

It additionally reached the top 40 in Australia and New Zealand.

The song's music video features American actor Matthew McConaughey.