Brooklyn Celtic was a name used by at least two U.S. soccer teams. The first was an early twentieth century amateur team which was formed in August 1910 and dominated the New York Amateur Association Football League from 1912 to 1917. The second was a member of the professional American Soccer League

American Soccer League

The American Soccer League has been a name used by three different professional soccer leagues in the United States. The first American Soccer League was established in 1921 by the merger of teams from the National Association Football League and the Southern New England Soccer League. For...

 in the 1930s and early 1940s. It was renamed Brooklyn St. Mary's Celtic in 1936.

Brooklyn Celtic I

The Brooklyn Celtic, also known as the Brooklyn Celtics and Celtic F.C., was an early twentieth century American soccer team which competed in the New York Amateur Association Football League. They won the second division in 1910-1911, gaining promotion to the first division. They proved their worth as a first division team in the 1911-1912 season when they tied New York Clan MacDonald

New York Clan MacDonald

The New York Clan MacDonald were a Scottish American professional soccer club. They spent several seasons in both the National Association Football League and New York State Football Association.-History:...

 for second place. The two teams met in a playoff for sole position of second, with Clan MacDonald winning 1-0. The next season, Celtic went on a streak of five straight league championships.

Year-by-year

Year	League	Reg. Season	American Cup	National Cup
1910/1911	NYSAFL (Div 2)	1st		N/A
1911/1912	NYSAFL	3rd		N/A
1912/1913	NYSAFL	1st		N/A
1913/1914	NYSAFL	1st		Runner Up
1914/1915	NYSAFL	1st	Runner Up	Runner Up
1915/1916	NYSAFL	1st		Third round
1916/1917	NYSAFL	1st	Semifinal	Second round

Honors

National Challenge Cup

• Runner Up (2): 1914
  1914 National Challenge Cup
  The 1913–14 National Challenge Cup was the first season that the modern-day Lamar Hunt U.S. Open Cup formed. Brooklyn Field Club won the title.-Open Cup Bracket:Home teams listed on top of bracket replay after tied match...
  
  , 1915
  1915 National Challenge Cup
  The 1914–15 National Challenge Cup was the second tournament of the modern day Lamar Hunt U.S. Open Cup. Many more teams - 80 - competed in 1915 after the success of the 1913–14 tournament. St. Louis and California were the only major soccer-playing regions without a representative. Bethlehem Steel...
  
  

American Cup

American Cup

The American Cup was the first major U.S. soccer competition open to teams beyond a single league. It was first held in 1885. In the 1910s, it gradually declined in importance with the establishment of the National Challenge Cup...

• Runner Up (1): 1915
  1915 American Cup
  The 1915 American Cup was the annual open cup held by the American Football Association. The Scottish-Americans, after two previous final appearances, won their first American Cup by overcoming the Brooklyn Celtics 1-0 in the championship game....
  
  

American Amateur Football Association Cup

American Amateur Football Association Cup

The American Amateur Football Association Cup was an American soccer competition open to amateur teams affiliated with the American Amateur Football Association . It played only two years, 1912 and 1913 before being superseded by the National Challenge Cup, now known as the Lamar Hunt U.S...

• Winner (1): 1912

League Championship - Division I

• Winner (5): 1913, 1914, 1915, 1916, 1917

League Championship - Division II

• Winner (1): 1910

Sultana Cup

• Winner (1): 1917

Southern New York State Cup

• Winner (2): 1914, 1917

Notable players

James Robertson

James Robertson (soccer)

James Mearns Robertson was a U.S. soccer full back who played the first two U.S. national team games in 1916.In 1916, Robertson was with Brooklyn Celtic of the New York Amateur Association Football League when he was called up to the national team. From at least 1918 to at least 1920, he played...

• Roddy O'Halloran George Tintle

Brooklyn Celtic II

The Brooklyn Celtic was an American soccer club based in Brooklyn, New York that was an inaugural member of the reformed American Soccer League

American Soccer League

The American Soccer League has been a name used by three different professional soccer leagues in the United States. The first American Soccer League was established in 1921 by the merger of teams from the National Association Football League and the Southern New England Soccer League. For...

. The club replaced Brooklyn F.C. 12 games into the season, assuming their record.

Before the 1935/36 season, the club was renamed Brooklyn St. Mary's Celtic.

Year-by-year

Year	Division	League	Reg. Season	Playoffs	U.S. Open Cup
1933/34	N/A	ASL	5th	No playoff	First round
1934/35	N/A	ASL	7th	No playoff	Second round
1935/36	N/A	ASL	6th	No playoff	Semifinals
1936/37	N/A	ASL	1st, National	Semifinals	Second round
1937/38	N/A	ASL	2nd, National	Final	Second place
1938/39	N/A	ASL	2nd, National	1st Round	Champion
1939/40	N/A	ASL	8th	No playoff	?
1940/41	N/A	ASL	8th	No playoff	?
1941/42	N/A	ASL	7th	No playoff	?