Þórfastr: a male name of Old Norse origin meaning "This name derives from the Old Norse “Þórfastr,” composed of two elements: “þórr” (thunder, the name of the god Thor) plus “fastr” (fast, firm, faithful)".It derives from the Old Norse word "þórr fastr > Þórfastr".
In Old Norse tradition, Þórfastr holds special significance as a masculine name representing This name derives from the Old Norse “Þórfastr,” composed of two elements: “þórr” (thunder, the name of the god Thor) plus “fastr” (fast, firm, faithful). This name has been cherished across generations, carrying with it the wisdom and heritage of Old Norse culture. Its enduring popularity speaks to its universal resonance.
Quick Facts About Þórfastr
Quick facts about Þórfastr
Origin
Old Norse
Gender
Boy name
Popularity
Moderately popular
Researched by Name Doctor Linguistics Team
Our names are verified by professional linguists with expertise in etymology and cultural naming traditions.
Last reviewed: November 2025
Meaning
This name derives from the Old Norse “Þórfastr,” composed of two elements: “þórr” (thunder, the name of the god Thor) plus “fastr” (fast, firm, faithful). In turn, the name means “one who has faith in the strong and fast Thor.” In Norse mythology, Thor is a hammer-wielding God associated with thunder, lightning, storms, oak trees, strength, the protection of humankind, and also hallowing, healing, and fertility.
Etymology & Details
Name Root
þórr fastr > Þórfastr
How to Pronounce Þórfastr
Þórfastr is pronounced /ˈθɔːr.fɑːstr/
Step-by-step pronunciation guide:
Break it into syllables: Þór-fas-tr
Say it like: "ÞÓR-FAS-TR"
Practice saying it naturally a few times
✓Pronunciation verified by linguistic sources
Usage & Popularity
Þórfastr is predominantly used in old norse speaking communities, where it maintains strong cultural connections and traditional significance.
old norse
Frequently Asked Questions About Þórfastr
What does the name Þórfastr mean?
Þórfastr means "This name derives from the Old Norse “Þórfastr,” composed of two elements: “þórr” (thunder, the name of the god Thor) plus “fastr” (fast, firm, faithful). In turn, the name means “one who has faith in the strong and fast Thor.” In Norse mythology, Thor is a hammer-wielding God associated with thunder, lightning, storms, oak trees, strength, the protection of humankind, and also hallowing, healing, and fertility.". The name comes from þórr fastr > Þórfastr. This old norse name has been passed down through generations, carrying its meaning across different cultures and time periods. Parents who choose Þórfastr for boys often connect with the name's meaning of "This name derives from the Old Norse “Þórfastr,” composed of two elements: “þórr” (thunder, the name of the god Thor) plus “fastr” (fast, firm, faithful). In turn, the name means “one who has faith in the strong and fast Thor.” In Norse mythology, Thor is a hammer-wielding God associated with thunder, lightning, storms, oak trees, strength, the protection of humankind, and also hallowing, healing, and fertility." as a quality they hope to see in their child. While not the most common choice, Þórfastr's meaningful roots have given it staying power among parents looking for a name with substance. The name is associated with qualities like NORSE MYTHOLOGY, reflecting its meaning in how people perceive those who carry it.
What is the origin of the name Þórfastr?
Þórfastr is a old norse name. The name traces back to þórr fastr > Þórfastr. The name remains closely tied to old norse naming traditions while occasionally appearing in other cultures. The old norse meaning "This name derives from the Old Norse “Þórfastr,” composed of two elements: “þórr” (thunder, the name of the god Thor) plus “fastr” (fast, firm, faithful). In turn, the name means “one who has faith in the strong and fast Thor.” In Norse mythology, Thor is a hammer-wielding God associated with thunder, lightning, storms, oak trees, strength, the protection of humankind, and also hallowing, healing, and fertility." reflects values important in the culture where this name first appeared.
Is Þórfastr a boy or girl name?
Þórfastr is a boy's name. The name has been used for boys across many generations, maintaining its masculine character through different eras and cultures. In old norse tradition, Þórfastr has historically been given to boys. The meaning "This name derives from the Old Norse “Þórfastr,” composed of two elements: “þórr” (thunder, the name of the god Thor) plus “fastr” (fast, firm, faithful). In turn, the name means “one who has faith in the strong and fast Thor.” In Norse mythology, Thor is a hammer-wielding God associated with thunder, lightning, storms, oak trees, strength, the protection of humankind, and also hallowing, healing, and fertility." carries well for a son, giving the name lasting appeal.
How do you pronounce Þórfastr?
Þórfastr is pronounced "/ˈθɔːr.fɑːstr/". This pronunciation follows is language patterns. As a single-syllable name, Þórfastr is quick to say and easy to call out. If you're unfamiliar with old norse names, listening to a native speaker say Þórfastr can help you catch the right rhythm and emphasis.
How popular is the name Þórfastr?
Þórfastr is somewhat common, familiar to most people. With moderate popularity, Þórfastr offers familiarity without being everywhere. It's the kind of name people recognize but don't hear every day. Þórfastr's popularity may vary between old norse communities and the broader population, where naming trends differ. The name's meaning of "This name derives from the Old Norse “Þórfastr,” composed of two elements: “þórr” (thunder, the name of the god Thor) plus “fastr” (fast, firm, faithful). In turn, the name means “one who has faith in the strong and fast Thor.” In Norse mythology, Thor is a hammer-wielding God associated with thunder, lightning, storms, oak trees, strength, the protection of humankind, and also hallowing, healing, and fertility." likely influences its appeal, as parents often choose names that express values or hopes for their children. Among boys' names, Þórfastr holds its own, appealing to parents who value distinctive options.
Where is the name Þórfastr commonly used?
Þórfastr is used primarily in old norse naming traditions. The name originated in old norse culture and spread as people migrated and cultures exchanged ideas. The meaning "This name derives from the Old Norse “Þórfastr,” composed of two elements: “þórr” (thunder, the name of the god Thor) plus “fastr” (fast, firm, faithful). In turn, the name means “one who has faith in the strong and fast Thor.” In Norse mythology, Thor is a hammer-wielding God associated with thunder, lightning, storms, oak trees, strength, the protection of humankind, and also hallowing, healing, and fertility." carries universal appeal, helping explain why different cultures adopted Þórfastr into their naming traditions. A child named Þórfastr will likely find their name recognized in multiple countries, which can be an advantage for families with international connections or who value global accessibility. Across these cultures, Þórfastr is given to boys, maintaining consistent gender association.
What is the cultural significance of Þórfastr?
Þórfastr carries associations with NORSE MYTHOLOGY. These qualities shape how people perceive the name and those who carry it, creating expectations and first impressions. The name's meaning of "This name derives from the Old Norse “Þórfastr,” composed of two elements: “þórr” (thunder, the name of the god Thor) plus “fastr” (fast, firm, faithful). In turn, the name means “one who has faith in the strong and fast Thor.” In Norse mythology, Thor is a hammer-wielding God associated with thunder, lightning, storms, oak trees, strength, the protection of humankind, and also hallowing, healing, and fertility." reinforces these associations, connecting the literal translation to the character traits people expect. In old norse culture, where Þórfastr originates, these qualities held particular value, making the name a way to express hopes for a child's character. Research shows that names do influence perceptions. People form impressions based on names before meeting someone, which means choosing Þórfastr sets certain expectations. Parents choosing Þórfastr often connect with one or more of these associations, selecting the name because it represents qualities they value or wish for their child. In old norse communities, these associations may carry extra weight, as naming traditions often reinforce cultural values.
Sources: Etymology verified through linguistic research including Oxford Dictionary of First Names, Behind the Name, and academic etymology databases.