MSI's list of prohibited places has been updated. https://www.marylandshallissue.org/jmain/information/md-carry-permits#f
Places and Times In Which Firearms Can Not Be Legally Carried by a Permit Holder
- On public school property - Md. Criminal Law § 4-102, Md. Criminal Law § 4-203(a)(1)(iii)https://mgaleg.maryland.gov/mgawebsite/Laws/StatuteText?article=gcr§ion=4-102&enactments=false
- With the deliberate purpose of injuring or killing another person - Md. Criminal Law § 4-203(a)(1)(iv)
- While in the commission of a crime of violence - Md. Criminal Law § 4-204
- While under the influence of alcohol or drugs - Md. Public Safety § 5-314
- When not in physical possession of the issued permit - Md. Public Safety § 5-308
- Outside of any restrictions placed upon the issued permit - Md. Public Safety § 5-307
- Aboard any vehicle or inside any building under the control of the Maryland Transit Administration (MTA) - Md. Transportation § 7-705(b)(6)
- Within 1,000 feet of a demonstration in a public place after being notified by law enforcement that guns cannot be carried - Md. Criminal Law § 4-208
- In or around State-owned public buildings and grounds - COMAR 04.05.01.03
- Inside State legislative buildings - Md. State Government § 2-1702(e)(2)
- Aboard aircraft engaged in certified air commerce - Md. Transportation § 5-1008
- An innkeeper may refuse to provide lodging or services to or may remove from a lodging establishment an individual where the innkeeper reasonably believes the individual possesses property that may be dangerous to other individuals, such as firearms or explosives - Md. Business Regulation § 15-203(a)(6)
- Captain, master or any person on board or having control of any dredge boat may not have or permit to be kept on the dredge boat more than two shotguns not larger than a number ten gauge and using shot not larger than number one - Md. Natural Resources § 4-1013
- Chesapeake Forest lands, except at designated shooting ranges and when legally hunting - COMAR 08.01.07.14
- State Forests, except at designated shooting ranges and when legally hunting - COMAR 08.01.07.04
- State Parks, except at designated shooting ranges and when legally hunting - COMAR 08.07.06.04
- State Highway rest areas, when displayed - COMAR 11.04.07.12
- At a facility under the control of the Maryland Stadium Authority - COMAR 14.25.02.06
Such facilities are defined in COMAR 14.25.01.01- At a State museum unless authorized for an exhibition that in the museum director's judgment promotes the purposes of the museum - COMAR 34.04.08.04
- At a Video Lottery Facility as defined by Md. State Government, § 9-1A-01(aa) - COMAR 36.03.10.48
- In community adult rehabilitation centers - COMAR 12.02.03.10(h)(9)
- In child care centers, except for small centers located in residences - COMAR 13A.16.10.04
- If under a proclaimed State of Emergency by the Governor when the Governor has issued orders, rules, or regulations controlling the possession, carry, use, and/or sale of firearms - Md. Public Safety § 14-303(b)(8)