Johannes Theodor "Theo" Bücker[2] (born 10 July 1948) is a German football manager and a former player,[3] who is the current coach of the under-15 team of Lebanese club Athletico SC.
On 8 August 2011, Bücker was announced as Lebanon's head coach, with the former national team manager taking over the reins ten years after leaving the position.
He is the first ever coach to bring Lebanon to the fourth and final qualifying round of the FIFA World Cup.
For the first time in their history, Lebanon defeated Iran by a single goal on matchday 4 of the final round.
Bücker announced his retirement in May 2013, effective from 11 June 2013, after a match that saw his side defeated by Iran 4–0.