The 2003–04 Bulgarian Cup was the 64th season of the Bulgarian Cup.^[1] Litex Lovech won the competition, beating CSKA Sofia 6–5 on penalties in the final at the Vasil Levski National Stadium in Sofia.^[2]

In this round entered winners from the preliminary rounds together with the teams of B Group.

Chepinets Velingrad (III) v Shumen (II)

21 October 2003 (2003-10-21)	Chepinets Velingrad (III)	1–0	Shumen (II)	Velingrad
15:00 EEST	Chushkov 14'			Stadium: Chepinets Attendance: 2,000

Spartak Plovdiv (III) v Spartak Pleven (II)

21 October 2003 (2003-10-21)	Spartak Plovdiv (III)	2–1	Spartak Pleven (II)	Plovdiv
15:00 EEST	Lishev 3' Stalev 38'		Gerov 65'	Stadium: Todor Diev Attendance: 300

Benkovski Kostinbrod (III) v Conegliano German (II)

21 October 2003 (2003-10-21)	Benkovski Kostinbrod (III)	1–0	Conegliano German (II)	Kostinbrod
15:00 EEST	Karadzhinov 52' (pen.)			Stadium: Georgi Benkovski Attendance: 100

Beloslav 1918 (III) v Svetkavitsa Targovishte (II)

21 October 2003 (2003-10-21)	Beloslav 1918 (III)	0–2	Svetkavitsa Targovishte (II)	Beloslav
15:00 EEST			Yanchev 67' (pen.) B. Georgiev 77'	Stadium: Vatev Attendance: 150

Sokol Trastenik (IV) v Dobrudzha Dobrich (II)

21 October 2003 (2003-10-21)	Sokol Trastenik (IV)	1–4	Dobrudzha Dobrich (II)	Trastenik
15:00 EEST	Simeonov 17'		A. Dimitrov 21' Kondev 35' Todorov 45' Jovanović 50'	Stadium: Atletik Attendance: 200

Sliven 2000 (III) v Rilski Sportist (II)

21 October 2003 (2003-10-21)	Sliven 2000 (III)	4–2 (a.e.t.)	Rilski Sportist (II)	Sliven
15:00 EEST	Kinov 16', 47' I. Stoyanov 92' Gyulev 97'		Andreev 9', 52'	Stadium: Hadzhi Dimitar Attendance: 200

Arkus Lyaskovets (III) v Beroe Stara Zagora (II)

21 October 2003 (2003-10-21)	Arkus Lyaskovets (III)	0–3	Beroe Stara Zagora (II)	Lyaskovets
15:00 EEST			Kovachev 11', 77' Tomanov 41'	Stadium: Mihail Aleksiev Attendance: 150

Yantra Gabrovo (III) v Septemvri Sofia (II)

21 October 2003 (2003-10-21)	Yantra Gabrovo (III)	1–2	Septemvri Sofia (II)	Gabrovo
15:00 EEST	Tsitlakidis 44'		Vodenicharov 5' Karadzhov 72'	Stadium: Hristo Botev Attendance: 200

Minyor Pernik (III) v Belite orli Pleven (II)

21 October 2003 (2003-10-21)	Minyor Pernik (III)	2–2 (2–4 p)	Belite orli Pleven (II)	Pernik
15:00 EEST	Shipkov 40' (o.g.) Serafimov 86'		Shipkov 27' Đokić 63'	Stadium: Minyor Attendance: 150

Dorostol Silistra (III) v Nesebar (II)

21 October 2003 (2003-10-21)	Dorostol Silistra (III)	1–0	Nesebar (II)	Silistra
15:00 EEST	Tonchev 27'			Stadium: Louis Eyer Attendance: 600

Pirinski Minyor Brezhani (IV) v Vihren Sandanski (II)

21 October 2003 (2003-10-21)	Pirinski Minyor Brezhani (IV)	0–4	Vihren Sandanski (II)	Brezhani
15:00 EEST			Yankov 23' Spasov 53' Chokarov 71' Dermendzhiev 73'	Stadium: Brezhani Attendance: 100

Rasovo (III) v Pirin Blagoevgrad (II)

21 October 2003 (2003-10-21)	Rasovo (III)	2–3	Pirin Blagoevgrad (II)	Rasovo
15:00 EEST	Dragiev 24' G. Georgiev 71'		Anev 17' Brankov 65' Zlatinov 67'	Stadium: Rasovo

This round featured winners from the First Round and all teams of A Group.