Sword
A sword was a type of bladed weapon with one or both sides of the blade sharpened for cutting. Many types of sword also had sharp points for thrusting. The blades of the great majority of practically useful swords were either straight or simply curved.  Swords were known to have been used in Human, Vulcan, and Klingon history. One who was skilled in the use of a sword was called a swordsman. ()

Swords are mentioned in "The Minstrel Boy", "", and "The Fall of Kang". (; )

Medieval knights used swords as one of their main weapons, () as did the Vikings. ()

The Kalar of Rigel VII wielded swords in combat. In 2254, Captain Christopher Pike, later speaking about his experience on this planet, said to Doctor Phil Boyce that he should have sensed trouble when he saw the swords and the armor. Instead, he became trapped in a fortress and had to fight one of the Kalar warriors. ()

In the mirror universe, Terran Emperor  had a sword that she carried with her in a sheath. (, et al.) In the throne room of the  in 2257, she removed the sword from its sheath while about to execute Michael Burnham for treason, but, moments later – when Burnham confessed to being from a parallel universe – Georgiou put the weapon back in its sheath. () When  and his followers found the throne room abandoned, Georgiou's sword was discovered by Lorca near the emperor's throne. The weapon was thereafter used by Lorca, including in a battle with Georgiou. However, she ultimately used it to stab him in the back, with the blade protruding through his chest, before she removed it from his body. The weapon was left aboard the Charon when, moments later, she was beamed aboard the . ()

In the alternate reality,  used a retractable sword to fight Romulans. ()

Sulu showed his skill with a fencing blade during the polywater intoxication. ()

On the planet 892-IV, swords were still used in every day life, the police and guards carried gladii as a second weapon. They were also used in gladiatorial combat and for executions. Captain Kirk was almost executed with a Roman gladius by the Master of the Games on live Empire TV. ()

When the Beta XII-A entity had the crew of the  fight against Kang's men, most of the weapons were turned into swords. Scott had a claymore, Chekov had a gladius, Sulu a Japanese katana, and Kirk an 18th century cutlass. ()

When Trelane chased Captain Kirk, Kirk disarmed Trelane and broke his cutlass. ()

When Q appeared to the crew of the  in 2364 for the first time, he was dressed as a 16th century sea captain and wearing a sword. ()

Captain Picard was an expert in European-style fencing, a sport which involved light, slim-bladed and blunted swords; protective clothing was worn which made the activity almost risk free. ()

In 2372, Miles O'Brien described the Battle of Clontarf as being "like the Battle of Britain, only with swords." ()

In early 2375, O'Brien and Worf reminisced about "Geordi waving that sword around" in The Three Musketeers holoprogram nine years earlier. ()

While performing anomaly consolidation duty on the  in 2381, Ensign D'Vana Tendi found a broken sword among the items Doctor Migleemo had earmarked for disposal. ()

Members of the Romulan Rebirth movement carried ornate swords inscribed with the Romulan language, while the Qowat Milat wielded a different type of sword called a tan qalanq. ()

Types of swords 

Claymore
Cutlass
Gladius
Katana
Klingon sword
Long sword
Nausicaan sword
Rapier
Retractable sword
Sword of Kahless
Sword of Stars
Tan qalanq

Swordfights 

In 2268, after being captured on the planet 892-IV, to try and force Kirk to surrender his crew, Proconsul  forced Doctor McCoy and Spock to fight on television against gladiators. Spock's opponent instantly tried to kill him, however as McCoy's had adopted the planet's new religion, he was unwilling, until the Master of the Games forced him to. Toward the end it looked like McCoy was going to lose, however in the nick of time Spock defeated his opponent and used the Vulcan nerve pinch to disable McCoy's. ()

Later in 2268, after the Beta XII-A entity altered some of the matter on the ship to create primitive weapons, several sword fights broke out between the crew of the Enterprise and Kang's crew, notable ones including the Klingons battling their way out of containment, them taking engineering, and the final fight in engineering.

In the final fight, Kirk used intraship beaming to get to engineering to try and convince Kang to stop the fighting, but Kang was so filled with rage that he attacked, and the two collided with imitation gladii. As they did, McCoy and Spock led several guards to engineering, the two of them managed to fight their way through, but left the crewmen in combat with the Klingons.

Kang and Kirk continued to battle, but just as he got Kang at a disadvantage, Kirk told him how they were being used, and convinced him the fight was pointless, realizing the truth, Kang followed Kirk's action, and dropped his sword, he then ordered his men to cease fire, as did Kirk. ()

In 2367, Duras used a Klingon sword to defend himself during a duel with Worf initiated under the Klingon Right of Vengeance after the council member slew K'Ehleyr. He lost the duel and was killed by Worf. ()

Later that year, as part of Q's Robin Hood scenario, the senior staff of the Enterprise-D were mostly given long swords. After saving Captain Picard from his execution, the crew took on Guy of Gisbourne's knights, while Picard took Gisbourne himself, although originally it seemed that Gisbourne would win, with him remarking "I'll have you know I'm the greatest swordsman in all of Nottingham!" Picard did win, and killed Gisbourne, shortly after replying, "very impressive. There's something you should know, I'm not from Nottingham!" ()

In 2371, after Harry Kim's  holoprogram was invaded by a photonic lifeform which kidnapped several crewmen in response to them unintentionally kidnapping other photonic lifeforms, The Doctor was sent in. Upon first meeting Unferth he was attacked by the warrior, although barely able to lift the sword, he saved himself by changing his mass, so the blade went right through him. Later after Unferth killed Freya, he was attacked by Unferth again, who tried to cover his crime by blaming The Doctor, however this time, as The Doctor was filled with rage at the death of one he loved, he easily defeated Unferth with Freya's sword. ()

External links
 
 

de:Schwert
pl:Miecz
Hand-held weapons