Can my commercial landlord/lessor cancel my lease just because I filed for
bankruptcy?

If your Bankruptcy Trustee attempts to “sell” (assign) your valuable lease to a third party (in exchange for payment) then your commercial landlord (or other type of commercial lessor) CAN terminate your lease if it chooses to, by the authority of 11 U.S. Code § 365 (Executory contracts and unexpired leases) which basically states that your Bankruptcy Trustee cannot “force” your commercial lessor to deal with some other party in your place and stead.

Although the Trustee in Bankruptcy can try to negotiate with your commercial landlord/lessor to allow an “assumption and assignment” of your lease, it is a voluntary act by your landlord/lessor – it cannot be forced upon him.

NOTE: If the lease was already in default at the time your bankruptcy is filed, your Landlord/Lessor will probably obtain permission from the Bankruptcy Court to cancel your lease UNLESS your Bankruptcy Trustee (or you if you wish to keep the lease and the Trustee has no interest in assuming it) provide(s) “adequate assurances” to the Lessor that the defaults will be promptly cured along with any pecuniary losses suffered by the Lessor.