Unnamed Predator class warships
The following is a list of unnamed  warships.

By commander 
 Razik's raider

By encounter

Jabin-allied vessel  

This Kazon vessel was operated by the Kazon-Ogla until 2371, when it was sent as backup to Maje Jabin's attempt to prevent the crew of  from boarding the Caretaker's array. 

When Tuvok and Kathryn Janeway were on the array, Chakotay, aboard the Maquis raider Val Jean, assisted Voyager in holding off Jabin's attacking Kazon fighters. The arrival of this warship prompted Harry Kim to contact the captain and warn, "We've got problems here. The Kazon just got some back up."

Within minutes, it took out "half the ship's systems", including Voyagers weapons array and sensors, prompting Chakotay to set a collision course with the massive vessel "to try and take some heat off [Voyagers] tail," ultimately striking into the vessel's port side. The warship, in turn, collided with the array and damage the array's self-destruct program. Not long after, Jabin advised that he had called for additional ships, but Janeway ultimately destroyed the array.() 

An image of the warship afire appeared in the collective experience Chakotay had with the members of the Borg Cooperative in 2373. ()

Encounter at spatial coordinates 21-alpha-prime by 9-3-6-zeta 

Three (possibly four) of these warships, along with two raiders, engaged Voyager on stardate 49123.5621, at spatial coordinates 21-alpha-prime by 9-3-6-zeta.  

During the attack, Voyager dropped multiple spatial charges, and despite a series of evasive maneuvers, quickly lost a majority of its shields. 

As another Kazon ship approached, Janeway attempted to escape by going to warp, but was unable to as a Kazon torpedo blew out the ship's containment generator,

At that time a saboteur, Captain Braxton, infiltrated the time frame because Voyagers shields were down, allowing him the perfect opportunity to evade the detection, and to plant a force-3 temporal disruptor. However, the temporal disruptor gave off a chronoton flux of 0.003, which was detected from the bridge, and was believed at first be caused by random interference from Kazon weapons fire.

As the battle ensued, Voyager disabled the lead vessel, forcing the others to regroup, before Voyagers warp drive came back online, but the ship's containment field was still unstable, limiting it to warp 2. 

These attacking ships did not pursue. ()

Trabe armada vessels 

Several Trabe vessels, including two carrier vessels and a dozen raiders, lead by Governor Mabus, were among the convoy that Neelix arranged to join Voyager in mid-2372. 

Later when considering an alliance with the Trabe, Chakotay mention that "[t]he Trabe have a lot of ships and a lot of weapons in that convoy. I think this alliance would be better than none at all." ()

Nistrim fleet 

Kazon-Nistrim First Maje Culluh assembled a fleet of eight large carrier vessels we encountered by Voyager in late 2372, after they reversed course to avoid a possible encounter with the Gema colony's defense force. Their attack formation was a classic Cardassian echelon. 

Voyager diverted four of the ships with false sensor signatures of Talaxian reinforcements, leaving it to engage the remaining four. The ships began detonating torpedoes at random in Voyagers flight path before it dropped out of warp.

Then when Voyager was at a range of two thousand kilometers, they initiated their holograms of Talaxian fighters, it was able to divide the Kazon's fire and destroyed one of the carriers with phasers and three photon torpedoes. However, Teirna's suicidal attack disabled the holograms, allowing the other three carriers to focus on Voyager and overwhelm its defenses, allowing for it to be boarded and captured by Culluh. ()

Predator class