What names are similar to Ragnar?

If you like Ragnar, consider Reidar, Runar and Gunnar. Like Ragnar, their spellings end in -ar.

The same sound

Two syllables, ending the same way as Ragnar.

Reidar Scandinavian · from Old Norse Hreiðarr, made of hreiðr, "nest, home", and herr, "army, warrior"

Runar Scandinavian · a modern name of uncertain origin, possibly made from Old Norse rún, "rune, secret lore", and herr, "army, warrior"

Gunnar Scandinavian · from Old Norse Gunnarr, gunnr "war" + herr "army, warrior"

Roar Scandinavian · from Old Norse Hróarr, "fame" joined with either "spear", "warrior" or "cautious", the name of a legendary Danish king

Also Scandinavian names, from the tradition Ragnar comes from.

Vidar Scandinavian · wide ruler (Norse mythology; god of vengeance, son of Odin)

Baldur Scandinavian · bold, brave (Norse mythology; son of Odin, god of light)

Sigurd Scandinavian · guardian of victory (Norse; legendary dragon-slayer of the Volsunga saga)

Torbjørn Scandinavian · Thor's bear (Norwegian, combining the god Thor with "bear")

Also international and mythological names.

Hector Greek · holding fast

Conor Irish · lover of hounds, wise counsel (legendary King Conchobar mac Nessa)

Ivar Norse · bow warrior (yr + herr); Ivar the Boneless of Viking legend

Yngve Scandinavian · of the Yngling dynasty (Norwegian/Swedish; from the ancient Norse god Yngvi-Freyr)

Each of these is at its highest in the 2020s, the same decade as Ragnar, on a similar curve.

Kasper Scandinavian · a Scandinavian form of Jasper, from Latin Gaspar, possibly from a word of Persian origin for "treasurer"

River English · flowing water

Heitor Portuguese · steadfast (Portuguese form of Hector)

Wilder English · wild, untamed