What IQ Do Most CEOs Have?

Are top executives really geniuses? Discover the average CEO IQ and why a higher score isn't always better. Read our guide and try the RIOT IQ test!

Dr. Russell T. WarneChief Scientist

The assumption that CEOs are in the top 1% of intelligence is deeply embedded in popular culture — and the data doesn't support it. Not because CEOs aren't smart, but because the relationship between IQ and leadership is considerably more nuanced than a simple "more is better" model would predict. What the research actually shows about CEO cognitive ability is both more grounded and more interesting than the mythology suggests.

What the Data Shows About CEO IQ

The most rigorous large-scale data on this question comes from a Swedish registry study tracking 1.3 million executives, which found that the median large-company CEO ranks at the 83rd percentile of cognitive ability — impressive, clearly above average, but nowhere near the top 1% most people assume. In IQ terms, the 83rd percentile corresponds to a score of approximately 113–115, placing the typical CEO solidly above average but well short of the 130+ range often implied in popular discussions of executive intelligence.

A separate large-scale dataset from BRGHT, compiled from 1,517,300 IQ test completions with self-reported job titles, found that the average IQ of people who work as CEO is 106.31, placing the role at rank 59 among jobs by average IQ. This figure is lower than the Swedish study but reflects a broader population of people who self-identify as CEOs — including smaller company heads and founder-operators — rather than large-company executives specifically.

Wai and Rindermann's 2015 study in the journal Intelligence, which examined the path and performance of Fortune 500 CEOs through education and cognitive ability data, found that Fortune 500 CEOs were cognitively selected but that the selection was moderate rather than extreme — consistent with the 83rd percentile figure from the Swedish data. CEOs of higher-revenue companies tended to show stronger cognitive profiles than those of lower-revenue companies, suggesting some positive relationship between cognitive ability and scale of executive responsibility.

A more recent study examining Finnish private firms, published in 2025, used actual IQ records from military conscript data linked to company financial records to examine CEO IQ and earnings quality. It found that higher CEO IQ enhanced the predictive ability of earnings for future cash flows — suggesting improved financial reporting quality — with the association strongest in firms with higher credit risk. This is one of the few studies to use verified IQ data rather than proxies, and it confirms that cognitive ability has a measurable operational impact in the CEO role.

The Threshold Effect: Why More IQ Isn't Always More CEO

Here is where the data becomes genuinely counterintuitive, and where I think the popular understanding of CEO intelligence goes most wrong.

A landmark study by researchers at the University of Lausanne, published in the Journal of Applied Psychology, assessed 379 mid-level leaders at private companies across 30 mainly European countries and found that intelligence showed a positive linear relationship with leadership effectiveness — but only up to a point. The association flattened out and then reversed at an IQ of approximately 120. For leaders scoring above 128, the association with less effective leadership methods was clear and statistically significant. Leaders scoring above the 120 threshold scored lower on transformational and instrumental leadership than their less cognitively extreme peers, as rated by subordinates and colleagues on standardized measures.

The researchers were careful to note what this finding does and doesn't mean. The very intelligent leaders were not using harmful or destructive leadership styles — they simply scored lower than peers on the specific positive leadership behaviors most associated with effective team performance. The curvilinear relationship between IQ and leadership effectiveness describes a pattern where cognitive ability helps substantially up to a point, then delivers diminishing returns, and eventually begins to work against certain leadership dimensions.

Several hypotheses have been proposed to explain this reversal. One is a communication gap: leaders operating well above the cognitive level of their teams may naturally gravitate toward analytical frameworks and abstractions that their subordinates find difficult to follow or act on. Another is expectation incongruity: when a leader is perceived as exceptionally intelligent, team members may hold unrealistically high expectations that create dissatisfaction when performance falls short of those expectations. A third is that the problem-solving style most natural to very high IQ individuals — systematic, thorough, complexity-seeking — may conflict with the rapid, simplified, consensus-building communication style that effective leadership often demands.

Once you reach approximately IQ 115 — the cognitive floor for most executive roles — additional IQ points provide diminishing returns relative to other factors. The analogy to height in basketball is apt: being 6'6" helps enormously compared to being 5'10", but the marginal advantage of being 6'9" versus 6'6" is considerably smaller.

The Non-Cognitive Factors That Matter More Above the Threshold

What actually separates effective CEOs from the pack, once the cognitive threshold is cleared, is a profile of non-cognitive attributes that no IQ test directly measures.

The Swedish registry study found that the median CEO ranks in the top 5% on cognitive ability but also in the top 17% on non-cognitive traits — and that non-cognitive traits predicted CEO appointment more reliably than cognitive ability alone. The traits most consistently associated with CEO selection and effectiveness include emotional intelligence, resilience, political acumen, communication clarity, and the ability to build alignment across competing agendas.

This isn't a soft or poorly-evidenced claim. Research examining what boards actually select for in CEO appointments consistently finds that the ability to make decisions with incomplete information while managing competing agendas — and then have all affected parties execute despite partial disagreement — is the distinguishing executive competency. That capacity involves working memory, cognitive flexibility, and processing speed — all IQ-relevant — but it also requires emotional regulation, interpersonal perception, and strategic social intelligence that a standard cognitive battery does not capture.

A large-scale study found that leaders with an IQ of around 120 are likely to be most effective, combining enough cognitive horsepower to handle the analytical demands of executive decision-making with sufficient interpersonal bandwidth to maintain team cohesion and stakeholder confidence. This is consistent with the 83rd percentile finding from the Swedish data — a CEO at the 83rd percentile in cognitive ability, around IQ 115, is smart enough to handle the analytical complexity of the role without crossing into the range where cognitive style begins to conflict with the interpersonal demands of effective leadership.

What This Means for Tech CEOs Specifically

The question of CEO IQ comes up most frequently in the context of technology company leaders, where the cultural association between technical brilliance and executive effectiveness is strongest. The data here is more complicated than the mythology suggests.

Tech CEOs — particularly founder-CEOs of large technology companies — do tend to show higher average cognitive profiles than CEOs across industries, partly because the founding of a technology company often requires strong fluid reasoning and technical problem-solving in the early stages. Studies suggest that to solve complicated business problems, the most influential leaders have an IQ of around 120 — and in technology specifically, where product complexity and technical decision-making remain central even at scale, the cognitive threshold for effective leadership may sit somewhat higher than in other industries.

But the curvilinear finding applies here too. The tech leaders who are most effective at scaling organizations — as opposed to founding them — tend to be those who combine strong analytical ability with the interpersonal and organizational skills needed to build and coordinate large teams. The brilliance that creates a breakthrough product is not the same cognitive profile as the one that sustains a 100,000-person organization. This distinction is one reason why founder-to-CEO transitions are notoriously difficult and why boards frequently bring in professional CEOs with different cognitive and interpersonal profiles as technology companies scale.

The C-Suite Comparison

One of the more revealing findings in the executive cognitive research concerns differences across C-suite roles rather than just the CEO position. The Swedish registry data found that CTOs score highest on cognitive ability among C-suite roles but earn the least, while CEOs earn the most despite having lower average cognitive ability than their CTO counterparts. CFOs also often outperform CEOs on standardized cognitive measures despite earning considerably less.

This pattern is consistent with the threshold model: the CEO role selects for a specific combination of cognitive sufficiency and non-cognitive leadership capability, not for maximum cognitive ability. The roles most directly correlated with higher cognitive scores — CTO, CFO — are also the roles most purely focused on technical or analytical problem-solving, where the relationship between IQ and performance is more linear. The CEO role sits at the intersection of technical, strategic, and interpersonal demands, which is precisely the context where a curvilinear cognitive-performance relationship would be expected.

The Takeaway

Most CEOs have IQs in the range of 110–120 — solidly above the population average, consistent with the 83rd percentile finding, and well short of the genius territory that popular mythology implies. The cognitive ability threshold for executive effectiveness appears to be around IQ 115, above which additional cognitive ability produces diminishing returns and above IQ 128 begins to correlate with less effective leadership style on certain dimensions. What separates effective CEOs from their peers, once the cognitive threshold is cleared, is a profile of non-cognitive attributes — emotional intelligence, resilience, communication clarity, and the capacity to build alignment under conditions of incomplete information — that no IQ test directly measures.

The practical implication of this research is not that intelligence doesn't matter for executive success — it clearly does. It's that intelligence is a necessary but not sufficient condition, and that the specific range most associated with effective leadership is considerably more moderate than the cultural mythology around CEO brilliance suggests.

If you want to understand where your cognitive profile sits across the domains relevant to high-level decision-making and leadership — fluid reasoning, working memory, processing speed, and verbal comprehension — the RIOT gives you a domain-level picture that a single composite number cannot capture.