Giannis Giakoumis (; 1940 – 20 February 1986) was a Greek footballer who played as a midfielder. He also pursued a managerial career.
Club career Born in Thessaloniki, Giakoumis began his football career at PAO Dioikitiriou. In 1960, he was acquired by PAOK and wore the white-black jersey for ten years (1960–70), playing as an attacking midfielder. He made a total of 252 league appearances scoring 41 goals with the White-blacks of the North.
In the summer of 1970, he moved along with his teammate Toulis Mouratidis to Naoussa. In 1974, he joined Panetolikos and ended his career two years later, playing his last season in the top-tier Alpha Ethniki.
Managerial career After his retirement from active football, Giakoumis pursued a managerial career, having worked at Naoussa, Almopos Aridea (1978), Panetolikos (1979–81) and Xanthi (1982–84 and 1986). During his tenure at Panetolikos, he suggested to PAOK president Giorgos Pantelakis the signing of Christos Dimopoulos.
Death Giakoumis suffered a heart attack and died on 20 February 1986, aged 46, while coaching Xanthi from the bench during a game against Kozani (1–0). Three months after his passing, a testimonial match was held in his honour between Xanthi and PAOK that ended 3–4.
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