Natalie McGarry, the Independent MP for Glasgow East, who has been charged with fraud offences, has confirmed she will not be seeking re-election.
The backbencher was one of the 56 SNP MPs elected in the 2015.
She withdrew from the SNP whip amid allegations about potential financial discrepancies in the accounts of two pro-independence groups.
Writing on Facebook, Ms McGarry said it had been a "huge honour and a privilege" to have represented her constituents at Westminster for the past two years but added: "I have, however, decided not to seek re-election."
At the weekend, the SNP national executive ruled that it would not be endorsing either Ms McGarry or Edinburgh West MP Michelle Thomson as party candidates.
Ms Thomson, who withdrew from the SNP whip amid an ongoing police investigation into property deals, subsequently confirmed that she would not be putting herself forward as a candidate.
Both Ms McGarry and Ms Thomson have denied any wrongdoing.
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