Georg Jakob Steenke (30 June 1801 in Königsberg – 22 April 1884 in Elbing) was a German architect and a königlicher Baurat (royal construction councillor) of the Kingdom of Prussia.
His father Johann Friedrich Steenke and his grandfather, both also from Königsberg, were involved with maritime trade.
In 1833 Steenke built a canal, the Seckenburger Kanal, in the Memel (Klaipėda) area.
He designed the Oberländischer Kanal (now called Elbląg Canal), which was built between 1844–58 from the Drausensee (Drużno) to the Drewenz (Drwęca) River.
Inaugurated in 1860, it connected the cities of Deutsch Eylau (Iława), Osterode (Ostróda), and Elbing (Elbląg).