Can you play basketball in GTA 6?

Yes. TGG saw Jason dribbling under the hoop at his Leonida Keys safehouse.

Where can you play basketball in GTA 6?

At Jason's safehouse in the Leonida Keys, which has a hoop. Whether street courts are playable is not confirmed.

TGG saw a basketball hoop at Jason's safehouse in the Keys, and Jason dribbling under it.

Rockstar's Vice City screenshot shows a street basketball court among the palms and towers.

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01 / Activities
GTA 6 activities
29 GTA 6 activities confirmed: robberies, street races, gym, hunting, fishing, scuba, mini golf, pool, nightclubs. Plus 8 seen or probable.
02 / Activities
GTA 6 gym
The GTA 6 gym takes a membership and three exercises a day: weights raise health, the treadmill stamina. Work out three days in a row to level up.
03 / Activities
GTA 6 base jumping
Base jumping is a confirmed GTA 6 activity, per Game Informer, and its screenshots show Lucia skydiving high above the canals and towers of Vice City.
04 / Activities
GTA 6 backyard wrestling
Backyard wrestling shows up in GTA 6's Extended Look: a bodyslam in a backyard ring, neighbours watching. Whether you can play it is not known yet.
05 / Guide
Leonida Keys on the GTA 6 map

Still unknown: Whether street courts are playable, and whether there are matches or only shooting.

Can you play basketball in GTA 6?
Yes. TGG saw Jason dribbling under the hoop at his Leonida Keys safehouse.
Where can you play basketball in GTA 6?
At Jason's safehouse in the Leonida Keys, which has a hoop. Whether street courts are playable is not confirmed.