Ștefan Târnovanu (born 9 May 2000) is a Romanian professional footballer who plays as a goalkeeper for Liga I club FCSB and the Romania national team.

Târnovanu made his senior debut on 31 March 2018, aged 17, starting for Știința Miroslava in a 0–1 loss to Hermannstadt while on loan in the second league.

In June 2021, Târnovanu was selected by manager Mirel Rădoi in Romania's squad for the postponed 2020 Summer Olympics, but did not feature in any match.

[8] Târnovanu was called up to the senior team for the first time by coach Edward Iordănescu on 24 May 2022, for the four opening group games with Montenegro, Bosnia and Herzegovina, and Finland in the UEFA Nations League.

In September 2018, media outlets reported that Târnovanu was temporarily removed from the Romania national under-19 team after shopping online with his roommate's bank card.