Jefferson de Carvalho Santos[1][2] (born August 30, 1995) is a Brazilian athlete, a combined events specialist.

[3] A native of São Paulo, he won the men's decathlon competition at the 2017 South American Championships in Athletics with a personal best score of 8,187 points; due to strong winds in three of the ten events, the result is labelled wind assisted in official records.

[4] This biographical article relating to Brazilian athletics is a stub.

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