Juan Diego Alvira Cortés (born October 16, 1976) is a Colombian journalist, news presenter and lawyer.

[2] Alvira is married with the also journalist and communicator Ana María Escobar.

[4] He became the director midday edition of City Noticias, and later was responsible for hosts the stellar edition of the news and was in charge of the presentation of the journalism and research program, CTY, Acción contra el crimen (in English: CTY, Action against crime).

[5] In the actuality, Alvira co-hosts the first edition of the news, alongside Catalina Gómez.

[3] In addition to the presentation in Noticias Caracol, Alvira created the section "El periodista soy yo" (in English: "I'm the Journalist"), which is based on citizen complaints sent on video.