Bartlett's Childers (originally known as Young Childers or Bleeding Childers; foaled 1716) was an important Thoroughbred sire in the 18th century.

Bartlett's Childers was foaled in 1716. Bred by Leonard Childers, he was a son of the Darley Arabian and Betty Leedes. He was a full-brother to the undefeated Flying Childers, but was never trained to race.^[1] It was once thought that Betty Leedes only produced Flying Childers and a foal that died young, but it is now strongly believed that she did produce another foal by the Darley Arabian (Bartlett's Childers).^[2] He was known as "Bleeding Childers" as he frequently bled from his nose.^[3] He was sold by Mr Bartlett of Nutwith Cote, near Masham, Yorkshire.^[4]

Bartlett's Childers stood in Masham, Yorkshire.^[5] Through his success as a stallion he showed breeders that unraced horses were capable of siring top racehorses.^[6] He became champion sire in 1742.^[2] His progeny included Smales's Childers, Grey Childers, Squirt, Coughing Polly and Hartley's Little Mare. Squirt was the sire of Marske and Syphon. Hartley's Little mare was the dam of a number of top horses including Blank (who also became a champion sire) and Shakespear.^[3] Marske sired the undefeated racehorse Eclipse. Through Eclipse, his is the dominant sire line of thoroughbreds in modern times.^[2]

* Bartlett's Childers is inbred 3D × 4D to the stallion Spanker, meaning that he appears third generation and fourth generation on the dam side of his pedigree.

* Bartlett's Childers is inbred 4D × 4D to the mare Old Morocco Mare, meaning that she appears twice in fourth generation on the dam side of his pedigree.