| Release Date | 06 September 2007 |
| Budget | $4,000,000 |
| Other Names | Mother of Tears: The Third Mother |
| Tagline | What you see does not exist. What you cannot see is truth. |
| Genre | Fantasy, Horror, Thriller |
| Country | ItalyUSA |
| Filming Locations | Cinecittà Studios, Cinecittà, Rome, Lazio, Italy |
| Language | English |
| Sound Mix | Dolby Digital |
| Color | Color |
| Film Type | Feature |
| Film Class | Supernatural Horror |
| Mood | Blood and Gore |
| Themes | Curses and Spells, Witches, Mothers and Daughters |
| Tones | Stylized, Gruesome, Tense, Atmospheric, Eerie, Dreamlike |
| Tags | Apocalypse, Black Magic, Daughter, Havoc, Monkey, Mother, Supernatural, Supernatural Powers, Witch, Witchcraft |
The Mother of Tears (Italian title: La Terza madre, The Third Mother) is a 2007 Italian/American supernatural horror film written and directed by Dario Argento. The film stars Asia Argento, Daria Nicolodi, Moran Atias, Udo Kier, and Coralina Cataldi-Tassoni. Written by Argento, Jace Anderson, Walter Fasano, Adam Gierasch, and Simona Simonetti, the film is the concluding installment of Argento's supernatural horror trilogy The Three Mothers, which began with Suspiria in 1977. The film depicts the confrontation with the final "Mother", the witch known as Mater Lachrymarum.