Damm may refer to:

• Damm (surname)
• Damm (Dummerstorf), a village in the municipality of Dummerstorf, district of Rostock, Mecklenburg-Vorpommern, Germany.
• Damm, Parchim, a municipality in the district of Ludwigslust-Parchim, Mecklenburg-Vorpommern, Germany.
• Damm, a district of the municipality of Schermbeck, in North Rhine-Westphalia, Germany
• S.A. Damm, a Spanish brewery.
• N. W. Damm & Søn, a Norwegian publishing house.
• Damm or Altdamm, a former town at the lower Oder river now Dabie (neighborhood of Szczecin) (Stettin)
• Drivers Against MADD Mothers, an organization opposed to MADD.
• Damm algorithm, a check digit algorithm presented by H. Michael Damm.

Mothers Against Drunk Driving (MADD) is a nonprofit organization in the United States and Canada that seeks to stop drunk driving, support those affected by drunk driving, prevent underage drinking, and overall push for stricter alcohol policy. The Irving, Texas–based organization was founded on September 5, 1980, in California by Candace Lightner after her 13-year-old daughter was killed by a drunk driver. There is at least one MADD office in every state of the United States and in at least one in each province of Canada. These offices offer victim services and many resources involving alcohol safety. MADD claims that drunk driving has been cut in half since their founding.