2002 Pan Pacific Swimming Championships – Men's 100 metre backstroke

The men's 100 metre backstroke competition at the 2002 Pan Pacific Swimming Championships took place on August 25–26 at the Yokohama International Swimming Pool. The last champion was Lenny Krayzelburg of US.

This race consisted of two lengths of the pool, all in backstroke.

Records
Prior to this competition, the existing world and Pan Pacific records were as follows:

Results
All times are in minutes and seconds.

Heats
The first round was held on August 25.

Semifinals
The semifinals were held on August 25.

Final
The final was held on August 26.