Onmyou Tantei Shoujoyuu RANTO Mashouroku (陰陽探偵少女遊RANTO☆魔承録) is a Japanese manga series written by Satoru Akahori and illustrations by Hitoshi Okuda. It was serialized in Fujimi Shobo's Monthly Comic Dragon Magazine from issues January 1999 to December 2001, with the chapters completing up to 5 volumes.
A light novel adaptatioon titled Onmyou Tantei Shoujoyuu RANTO Mashouroku ZERO (陰陽探偵RANTO☆魔承録 ZERO) was also released