Abstract: An anti-theft ornament apparatus allowing a hood ornament to be either spring mounted or securely fastened to the hood and allowing the ornament to be easily removed and remounted to the hood is disclosed. A tubular housing is attached to the ornament mounting base. A sliding disk that slides up and down within the housing is attached by a connecting rod to the ornament mounting loop. A spring surrounding the connecting rod keeps the ornament in place on the ornament base through spring tension in normal use. When the ornament is removed a disk magnet above the sliding disk serves to actuate a magnetic locking arm to hold the connecting rod and sliding disk in a raised position. When the ornament is replaced an upward movement disengages the locking arm, allowing the ornament and sliding disk to return to the lower ornament mounted position. A locking plunger will firmly secure the ornament in the mounted position.