This is a list of the ghosts in Luigi's Mansion.
|Blue Twirler||Heavy ghosts that slam their fists onto the ground.||30 HP|
|Bowling Ghost||Yellow ghosts that roll purple bombs like a bowling ball at Luigi.||0 HP|
|Dangler||Purple or white laughing ghosts that appear from the ceiling. The purple variation drops a bomb upon appearing.||0 HP|
|Elemental Ghosts||These are elemental spirits that give Luigi the ability to shoot fire, water, or ice, depending on the type. They only appear if its corresponding element medal is collected.||0 HP|
|Element-powered Ghosts||White Ghosts with an element covering their heart. There are three types, each a variant of a common ghost:
||10, 20, 30 HP|
|Flying Fish||Small fish ghosts found near some sources of water. They damage Luigi if he touches them.||0 HP|
|Garbage Can Ghost||Green ghosts that throw banana peels to try and trip Luigi.||40 HP|
|Ghost Bat||If Luigi activates his Poltergust 3000, they begin to attack him. They appear in yellow and purple varieties, although the difference is only cosmetic.||0 HP|
|Ghost Mouse||Mice that damage Luigi if they touch him.||0 HP|
|Gold Ghost||The most common and basic ghost enemy. If it gets close to Luigi, it tries to punch him.||10 HP|
|Gold Mice||Mice that reward Luigi a lot of treasure if sucked into the Poltergust 3000. They can be found in small blocks of cheese using the Game Boy Horror's scan radar or by chance in certain rooms. If Luigi fails to catch a Gold Mouse, it is permanently gone.||0 HP|
|Grabber||Ghosts that try to choke Luigi. Some are visible only in mirrors, or as shadows||10 HP|
|Meteor Ghost||Small ghosts that fall from the sky. They cannot fit in the Poltergust 3000, and their purpose is to be launched at the Moon in the Observatory.||0 HP|
|Speedy Spirit||A pale blue ghost which is a variant of Gold Ghost. They move around quickly and, like Gold Mice, if Luigi catches one, he earns treasure. Like Gold Mice, if Luigi fails to catch a Speedy Spirit, it permanently disappears.||10 HP|
|Mr. Bones||A skeleton ghost.||30 HP|
|Purple Puncher||Tall, pink ghosts (despite their name) that punch and move faster than Gold Ghosts.||20 HP|
|Shadow Clone||Clones of Bogmire made from shadows.||0 HP|
|Shy Guy Ghost||They wear a mask (with no eyes) and wield a staff that they either swing or poke Luigi with. Luigi can reveal their heart by sucking off their mask and then pointing his flashlight at them.||20 HP|
|Spark||Small spiny ghosts that explode every few seconds. If Luigi hits them with fire they explode automatically, but if squirted with water they disappear. They are the only ghost that cannot be vacuumed.||0 HP|
|Waiter Ghost||A waiter who serves food to Mr. Luggs. They do not attack Luigi and cannot damage him, but they must be vacuumed up before Luigi can fight Mr. Luggs.||10 HP|
These are the Portrait Ghosts in the mansion. They are listed in order of their capture. The final Portrait Ghost of an area is the boss, whereas the other ones can be thought of as mini-bosses.
There are fifty Boos, which are specific type of ghost, for Luigi to capture in the mansion to obtain an optional Gold Diamond. More information can be found on the Boos page.