El diario de Daniela (English title: The diary of Daniela or Daniela's Diary) is a Mexican child telenovela produced by Rosy Ocampo for Televisa in 1998.

On Monday, November 30, 1998, Canal de las Estrellas started broadcasting El diario de Daniela weekdays at 4:00pm, replacing Gotita de amor. The last episode was broadcast on Friday, April 16, 1999 live at Estadio Azteca with El niño que vino del mar replacing it on Monday April 19, 1999.

Yolanda Ventura and Marcelo Buquet (then changed with Gerardo Murguía) starred as adult protagonists, Daniela Luján and Martín Ricca starred as child protagonists, while Mónika Sánchez, Odiseo Bichir, Roberto Ballesteros, David Ostrosky, Mariana Huerdo, Carlos Peniche, Melina Escobedo and Fernando Rodríguez starred as main antagonists. Leticia Calderón starred as special participation. The soundtrack album sold 300,000 units in Mexico as of 2002.