| Club: | LDU Quito |
| Season: | 1998 |
| Chairman: | Darío Ávila |
| Chrtitle: | President |
| Manager: | Carlos Cabral Paulo Massa |
| Mgrtitle: | Manager |
| Stadium: | Estadio Casa Blanca |
| League: | Serie A |
| League Result: | Champions (5th title) |
| Cup1: | Copa CONMEBOL |
| Cup1 Result: | Quarter-finals |
| League Topscorer: | Patricio Hurtado (16 goals) |
| Season Topscorer: | Patricio Hurtado (16 goals) |
| Pattern La1: | _LDU 1998 |
| Pattern B1: | _LDU 1998 |
| Pattern Ra1: | _LDU 1998 |
| Pattern Sh1: | _LDU 1998 |
| Pattern So1: | _red_midband_color |
| Pattern La2: | _whitesmalllower |
| Pattern B2: | _LDU 1998A |
| Pattern Ra2: | _whitesmalllower |
| Leftarm2: | 030257 |
| Rightarm2: | 030257 |
| Shorts2: | 030257 |
| Socks2: | 030257 |
| Prevseason: | 1997 |
| Nextseason: | 1999 |
Liga Deportiva Universitaria de Quito's 1998 season was the club's 68th year of existence. It was also their 45th year in professional football, and their 38th in the top level of professional football in Ecuador.
Supplier: Umbro
Sponsor(s): La Lechera, Crunch
Note: Penalty shootout extra points: Aucas & Olmedo (5); D. Quito, Emelec, LDU Quito & T. Universitario (4); Barcelona & Panamá (3); Delfín, El Nacional & ESPOLI (2); D. Cuenca (1)
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Note: Penalty shootout extra points: LDU Quito (1)
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=Note: Penalty shootout extra points: LDU Quito (3); Olmedo & T. Universitario (2); Barcelona, Delfín & D. Cuenca (1)
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Note: Penalty shootout extra points: Barcelona (2); D. Quito (1)
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See main article: article and 1998 Copa CONMEBOL.