This is a list containing the Billboard Hot Latin Tracks number-ones of 1991.
| Issue date | Song | Artist(s) | Ref. |
|---|---|---|---|
| January 5 | "Es Demasiado Tarde" | Ana Gabriel | [1] |
| January 12 | [2] | ||
| January 19 | [3] | ||
| January 26 | [4] | ||
| February 2 | [5] | ||
| February 9 | [6] | ||
| February 16 | "Te Pareces Tanto a Él" | Myriam Hernández | [7] |
| February 23 | [8] | ||
| March 2 | [9] | ||
| March 9 | [10] | ||
| March 16 | "Sopa de Caracol" | Banda Blanca | [11] |
| March 23 | [12] | ||
| March 30 | "No Basta" | Franco De Vita | [13] |
| April 6 | [14] | ||
| April 13 | [15] | ||
| April 20 | [16] | ||
| April 27 | [17] | ||
| May 4 | [18] | ||
| May 11 | "Mi Deseo" | Los Bukis | [19] |
| May 18 | [20] | ||
| May 25 | [21] | ||
| June 1 | [22] | ||
| June 8 | [23] | ||
| June 15 | [24] | ||
| June 22 | "Todo, Todo, Todo" | Daniela Romo | [25] |
| June 29 | [26] | ||
| July 6 | [27] | ||
| July 13 | [28] | ||
| July 20 | [29] | ||
| July 27 | [30] | ||
| August 3 | [31] | ||
| August 10 | [32] | ||
| August 17 | [33] | ||
| August 24 | [34] | ||
| August 31 | "Cosas del Amor" | Vikki Carr and Ana Gabriel | [35] |
| September 7 | [36] | ||
| September 14 | [37] | ||
| September 21 | [38] | ||
| September 28 | [39] | ||
| October 5 | [40] | ||
| October 12 | [41] | ||
| October 19 | [42] | ||
| October 26 | [43] | ||
| November 2 | [44] | ||
| November 9 | "Por Qué Será" | Rudy La Scala | [45] |
| November 16 | [46] | ||
| November 23 | "Amor Mío, ¿Qué Me Has Hecho?" | Camilo Sesto | [47] |
| November 30 | [48] | ||
| December 7 | [49] | ||
| December 14 | [50] | ||
| December 21 | [51] | ||
| December 28 | [52] |
