For the purpose of this page, please see: Lostpedia:Links to theory pages
# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Etc.
- MacCutcheon/Theories
- Magic box/Theories
- Magnus Hanso/Theories
- Male flight attendant/Theories
- Malick/Theories
- Man of Science, Man of Faith/Theories
- Man in Black/Theories
- Man in Black's bench/Theories
- Man in Black's recruits/Theories
- Mandrake Wig/Theories
- Manny Weissman/Theories
- Mapinguari/Theories
- Marc Silverman/Theories
- Marcus/Theories
- Margery/Theories
- Margo Shephard/Theories
- Martinez/Theories
- Martin Keamy/Theories
- Martin Keamy (flash-sideways timeline)/Theories
- Marvin Candle/Theories
- Mary Jo/Theories
- Mass grave/Theories
- Maternity Leave/Theories
- Mathematical Forecasting Initiative/Theories
- Mathias/Theories
- Medusa spider/Theories
- Meet Kevin Johnson/Theories
- Mega Lotto Jackpot/Theories
- Melissa (Cabin Fever)/Theories
- Mental Health Appeal/Theories
- Meningococcal disease/Theories
- Meteorology/Theories
- Message bottle/Theories
- Michael Dawson/Theories
- Michael's mother/Theories
- Michael Gilday/Theories
- Michelle/Theories
- Middle section survivors/Theories
- Mid-air break-up/Theories
- Mike/Theories
- Mikhail Bakunin/Theories
- Mikhail's document/Theories
- Minnesota Metallurgy/Theories
- Missing body parts/Theories
- Mittelos Bioscience/Theories
- Moira/Theories
- Molotov Woman/Theories
- Montand/Theories
- Moths/Theories
- Morgue doctor/Theories
- Mr. Carlson/Theories
- Mr. Cluck's Chicken Shack/Theories
- Mr. Ford/Theories
- Mr. Kwon/Theories
- Mr. LaShade/Theories
- Mr. Paik/Theories
- Mr. Slavitt/Theories
- Mrs. Arlen/Theories
- Mrs. Arlen's son/Theories
- Mrs. Gardner/Theories
- Mrs. Locke/Theories
- Munson/Theories
- Mural/Theories
- Music box/Theories
- Music/Theories
- Mysterious Figure/Theories