| January | - The Langholm Carpet Bowling Club held two major competitions.
| - Two Zeppelins made the first aerial attacks on the UK.
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| February | - Local shops began a series of price increases due to shortages.
| - Germany declared the waters around Britain and Ireland as war zones.
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| March | - Two touring troupes put on plays and musical performances.
| - SS Falaba was sunk, causing outrage in the USA.
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| April | - Councillor Alexander Montgomery resigned after being accused of vote-rigging.
| - Gallipoli landings commenced.
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| May | - The Common Riding was cancelled, generating considerable protest.
| - A shortage of munitions (the ‘Shell Crisis’) resulted in a coalition government.
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| June | - Broncho Bill’s Great Wild West Exhibition visited with a 10,000-seat tent.
| - Fokker monoplanes established German air superiority.
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| July | - The Common Riding proceeded in a modified format, but Provost Easton refused to participate.
| - The Munitions of War Act was passed to address the Shell Crisis.
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| August | - Prince Paul of Serbia stayed with the Duke of Buccleuch at Langholm Lodge.
| - SS Arabic was sunk, causing major diplomatic tensions.
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| September | - Janet Scott survived the sinking of RMS Hesperian while emigrating to Canada.
| - The Battle of Loos, France.
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| October | - A concert was held to celebrate the first anniversary of the Red Cross Hospital.
| - Bulgaria joined the Central Powers of Austria-Hungary, Germany and the Ottoman Empire.
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| November | - Construction of a huge munitions factory began at Gretna, attracting workers from Langholm.
| - The Lord Derby Scheme of volunteer registration was introduced, a precursor to conscription.
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| December | - Employees in Langholm insisted on pay rises and a local branch of a trade union was formed.
| - Withdrawal from Gallipoli began.
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| Postscript | - The local newspaper summarised 1915
| - The local newspaper summarised 1915
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