| Club: | Sporting CP |
| Season: | 2018–19 |
| Chrtitle: | President |
| Chairman: | Frederico Varandas |
| Manager: | Marcel Keizer |
| Stadium: | Estádio José Alvalade |
| League: | Primeira Liga |
| League Result: | 3rd |
| Cup1: | Taça de Portugal |
| Cup1 Result: | Winners |
| Cup2: | Taça da Liga |
| Cup2 Result: | Winners |
| Cup3: | UEFA Europa League |
| Cup3 Result: | Round of 32 |
| League Topscorer: | Bruno Fernandes (20) |
| Season Topscorer: | Bruno Fernandes (32) |
| Largest Win: | (5 May 2019) |
| Largest Loss: | (7 October 2018) (3 February 2019) |
| Pattern La1: | _sporting1819h |
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| Prevseason: | 2017–18 |
| Nextseason: | 2019–20 |
The 2018–19 Sporting CP season was the club's 113th season in existence and 85th consecutive season in the top flight of Portuguese football.
Sporting CP began the domestic season on 12 August 2018 with a 3–1 away win against Moreirense through two goals from Bas Dost and one from Bruno Fernandes. The first Lisbon derby against Benfica was played on 25 August (matchday 3), where a penalty goal from Nani was not enough for a win as the match finished 1–1 at Estádio da Luz.
See main article: 2018–19 Primeira Liga.
See main article: 2018–19 Taça de Portugal.