10 May 1988§	Preliminary Round		Caistor Town v Hykeham	Brigg Road Ground, Caistor	misc
	10 May 1988§	Preliminary Round		South Kelsey v Barton Town	Waddingham Road, South Kelsey	misc
	29 May 1988	First Round		Holton-le-Clay v Broughton	Tetney Lane, Holton-le-Clay	misc860055
	31 May 1988§	First Round		Barton Town v Market Rasen	Marsh Lane, Barton on Humber	misc
	31 May 1988§	First Round		Belton v Nettleham	Church Street, Belton	misc
	31 May 1988§	First Round		Caistor Town v Alkborough	Brigg Road Ground, Caistor	misc
	31 May 1988§	First Round		Cleethorpes Third XI v Normanby Park Works	Sports Ground, Cleethorpes	misc
	31 May 1988§	First Round		Grimsby British Rail Sports Association v Nettleton Mines	Carr Lane, Grimsby	misc
	31 May 1988§	First Round		Hartsholme v Saxilby	Ashby Avenue, Hartsholme	misc
	31 May 1988§	First Round		Haxey v Appleby Frodingham Second XI	Haxey Lane, Haxey	misc
	31 May 1988§	First Round		Kirton Lindsey v Messingham	Redbourne Mere, Kirton in Lindsey	misc
	31 May 1988§	First Round		Lincoln Claytons v Alford	Clayton's Sports Club Ground, Lincoln	misc
	31 May 1988§	First Round		Normanby Park v Grimsby Town	Normanby Park Estate, Scunthorpe	misc
	31 May 1988§	First Round		Ruston Bucyrus v Nuform Sports	Ruston-Bucyrus Ground, Lincoln	misc
	31 May 1988§	First Round		Rustons v Ross Sports	Newark Road, Lincoln	misc
	31 May 1988§	First Round		Scunthorpe Town v St John's Hospital	Heslam Park, Scunthorpe	misc
	31 May 1988§	First Round		Skegness v Outcasts	Richmond Drive, Skegness	misc
	31 May 1988§	First Round		Southcliffe St Andrews v Louth	Sobraon Barracks, Lincoln	misc
	12 Jun 1988	Second Round		Broughton v Caistor	Recreation Ground, Broughton	misc860059
	21 Jun 1988§	Second Round		Barton Town v Nettleton Mines	Marsh Lane, Barton on Humber	misc
	21 Jun 1988§	Second Round		Hartsholme v Messingham	Ashby Avenue, Hartsholme	misc
	21 Jun 1988§	Second Round		Lincoln Claytons v not known	Clayton's Sports Club Ground, Lincoln	misc
	21 Jun 1988§	Second Round		Louth v not known	London Road, Louth	misc
	21 Jun 1988§	Second Round		Normanby Park Works v Scunthorpe Town	Cemetery Road Sports Ground, Brumby	misc
	21 Jun 1988§	Second Round		not known v Belton	not known	misc
	21 Jun 1988§	Second Round		not known v not known	not known	misc
	12 Jul 1988§	Quarter-Final		Lincoln Claytons v Scunthorpe Town	Clayton's Sports Club Ground, Lincoln	misc
	12 Jul 1988§	Quarter-Final		Louth v Messingham	London Road, Louth	misc
	12 Jul 1988§	Quarter-Final		not known v Nettleton Mines	not known	misc
	24 Jul 1988	Quarter-Final		Broughton v Belton	Recreation Ground, Broughton	misc860066
	31 Jul 1988§	Semi-Final		Appleby Frodingham v Messingham	Brumby Hall, Scunthorpe	misc
	07 Aug 1988	Semi-Final		Broughton v Scunthorpe Town	Recreation Ground, Broughton	misc860069
	21 Aug 1988	Final		Appleby Frodingham v Broughton	Augusta Street, Grimsby	misc860071

§ The fixture list specified that the match must be completed by this date.