Please Mr.Lostman is the fifth album by the rock band the pillows. The album title is a play on words of Please Mr. Postman, the representative song of The Marvelettes.

After experiencing poor sales, the departure of their leader, and other setbacks, the pillows had been in a period of musical exploration. Starting with this work, the band established the style they are known for today, marking a breakthrough out of that exploratory phase. In stark contrast to the previous album, which incorporated various elements such as jazz and bossa nova, this album is entirely devoted to the standard rock instruments — guitar, bass, and drums — resulting in a sound with a relatively strong rock flavor.