ダマスカス系（ダマスカスけい、Damascus line）は、馬の父系（父方の系図）の1つ。
サイアーライン
Darley Arabian 1700 Bartlet's Childers 1716 Squirt 1732 Marske 1750 Eclipse 1764 ---←エクリプス系に戻る Potoooooooo 1773 Waxy 1790 Whalebone 1807 Sir Hercules 1826 Birdcatcher 1833 The Baron 1842 Stockwell 1849 Doncaster 1870 Bend Or 1877 Ormonde 1883 Orme 1889 ---←オーム系に戻る Flying Fox 1896 Ajax 1901 Teddy 1913 ---←テディ系に戻る Sun Teddy 1933 Sun Again 1939 Sunglow 1947 Sword Dancer 1956 Damascus 1964 ---↓ダマスカス系（改行）
---↓ダマスカス系---
Damascus 1964 → Pacific Princess 1973 Cutlass 1970 Monsieur Champlain 1980 Cutlass Reality 1982 Friendly Lover 1988 San Mont Andreas 1998 Timeless Moment 1970 Gilded Time 1990 Millonario 1996 Chilenito 2001 Early Flyer 1998 Spalding Flyer 2006 Barely a Moment 2001 Gayego 2005 Phone Time 2007 Ta Luv 2007 *ラバージョン 1971 シルバーモリユキ 1977 *ジャッジャー 1971 Accipiter 1971 Beldale Flutter 1978 Salieri 1980 Prince Salieri 1986 Bailjumper 1974 Skip Trial 1982 Crucial Trial 1990 Jetting Along 1990 Defense Witness 1991 Warrantor 1991 Skip Away 1993 Brave'n Away 2000 G.W.'s Skippie 2000 Away to Heaven 2001 Skipshot 2007 →*ヴァシリカ Vasilika 2014 Go Underground 1998 Loose 1983 Private Account 1976 → Personal Ensign 1984、Inside Information 1991、East of the Moon 1991 Fast Account 1982 Northern Account 1999 Sir Leon 1982 Personal Flag 1983 Private Terms 1985 *ソウルオブザマター Soul of the Matter 1991 Cloud's Forty Four 1991 Privano 1991 Afternoon Deelites 1992 Harry's Deelite 1999 Premeditation 1999 Run Like Fire 2005 Chester's Choice 2000 Three Hour Nap 2002 Amanecer de Oro 2008 Jackson 1992 Private Prince 2004 Secret Hello 1987 Secret Firm 1995 Secret Heart 2002 Corporate Report 1988 Valley Crossing 1988 Brunswick 1989 *レコーダー 1990 Unaccounted For 1991 Unaccountedlea 1998 Dervis Aga 2005 Serhas 2005 Azaraks 2007 Buenos Aires 2007 Dont Stop Me 2008 Uncle Harry 2008 Hard Worker 2009 Cagantercan 2010 Free Chi 2010 Yalpagan 2012 Privately Held 1994 Public Purse 1994 Alcorano 2004 Aerosol 2009 Hawk's Eyes 2009 Holding Glory 2009 Benefice 1978 *タクラマカン 1978 ロビンランサー 1989 Time for a Change 1981 Fly so Free 1988 Amnesty 1995 *キャプテンスティーヴ Captain Steve 1997 Arabian Light 1998 Technology 1989 Time Bandit 1996 *オジジアン Ogygian 1983 → ジョーディシラオキ 1997 Colorful Crew 1989 Tooles Return 2003 *エイシンワシントン 1991 *バトルライン 1993 Dice Dancer 1995 Crusader Sword 1985 → Tin Cup Chalice（g） 2005 Palance 1991 Palance Atlantic 2004 Jealous Crusader 1992 Imaginary Sword 1996 Confidential Talk 1987 Escandaloso 1995 Lockout 1995 Lost 2005 Banking 1997 Kara de Birigui 2008 Eastern Echo 1988 Swiss Yodeler 1994 →Thor's Echo（g） 2002 Zees Echo 2007
サイアーライン上は全て種牡馬入りした馬。→印は牝馬、セン馬、非種牡馬の代表産駒。