The 2018–19 season was Al-Ittihad's 43rd consecutive season in the top flight of Saudi football and 92nd year in existence as a football club. Along with the Pro League, the club competed in the King Cup, the Sheikh Zayed Cup, and the Champions League. The season covers the period from 1 July 2018 to 30 June 2019.
 "As of 7 January 2019"
Players.
Squad information.
 ;templatestyles src="Template:Football squad player/styles.css" / ;
Pre-season and friendlies.
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
Competitions.
Super Cup.
As champions of the 2018 King Cup, Al-Ittihad took on the 2017–18 Pro League winners, Al-Hilal, for the season-opening Saudi Super Cup.
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
Pro League.
Matches.
All times are local, AST ().
 ;templatestyles src="Legend/styles.css" / ;  Win
 ;templatestyles src="Legend/styles.css" / ;  Draw
 ;templatestyles src="Legend/styles.css" / ;  Loss
 ;templatestyles src="Legend/styles.css" / ;  Postponed
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
King Cup.
All times are local, AST ().
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
AFC Champions League.
Group stage.
The group stage draw was made on 22 November 2018 in Kuala Lumpur. Al-Ittihad were drawn with Al-Wahda, Lokomotiv Tashkent, and Al-Rayyan.
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
Sheikh Zayed Cup.
Round of 32.
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
 ;templatestyles src="Template:Football_box_collapsible/styles.css" / ;
"Last updated on 21 May 2019."
Statistics.
Goalscorers.
"Last Updated: 21 May 2019"
Assists.
"Last Updated: 21 May 2019"
Clean sheets.
"Last Updated: 7 May 2019"
References.
 ;templatestyles src="Reflist/styles.css" / ;